Yu Ra desperately waits for her match to show up, but things just won’t go as she’d hoped. Tae Poong stands in court to clear Kyung Hye’s name of false charges and convict Hwa Yeon and Yu Ra. As the trial begins, the truth is slowly revealed, but Hwa Yeon denies her charges and consistently lies. Meanwhile, Tae Poong suddenly collapses.
Seo Jun dies from the accident, and everyone is in mourning. Yu Ra is hiding after she hit Seo Jun, and she reaches out to her mother to flee the country. Hwa Yeon has men following Yu Ra to get rid of her for killing Seo Jun, but Sook Ja brought Tae Poong and Sang Tae to have her daughter arrested.
As Yu Jung persuades a major stockholder to change his mind, Hwa Yeon chooses to join hands with Yu Ra. With Yu Ra’s help, Hwa Yeon has the shares to remove Woo Seok, and Tae Poong and Yu Jung face a crisis once again. Meanwhile, Hwa Yeon plots meticulously to lead Woo Seok’s dismissal successfully.
Yu Ra tries to break out of the asylum. Hwa Yeon manages to be released from prosecution. Seo Jun registers as a chairman candidate, so he and Hwa Yeon try to persuade stockholders to choose them. Meanwhile, Tae Poong and Yu Jung try to convince the stockholders to vote down the proposal for the dismissal of Chairman Cha.
Woo Seok crashes into a truck on his way to see Ji Sook, and he lapses into a coma due to a cerebral hemorrhage. Hwa Yeon takes advantage of the situation and kicks out Yu Ra. Ji Sook hears that Woo Seok is in the hospital, so she goes to visit him only to be forced out by Hwa Yeon and Mr. Koo. She accidentally falls down the stairs and remembers more of her past.
Seo Jun tells Yu Jung, Yu Ra, and Min Hyuk that he knows Yu Jung and Yu Ra are sisters and that Min Hyuk is Tae Poong. Hwa Yeon also finds out about Yu Ra’s lies, so she tries to get rid of her. Yu Ra finds something that might stop Hwa Yeon from kicking her out. Woo Seok realizes what Hwa Yeon did to Ji Sook, so he goes to see her.
Dae Chul tells Yu Jung that the woman he was having an affair with is her mother. Yu Jung comes to accept the fact. Chun Soo keeps digging into the secret Dae Chul is hiding about his daughters. Seo Jun finds out that Yu Jung and Yu Ra are sisters. Hwa Yeon still tries to keep Su Hee away from Woo Seok.
Su Hee gets hit in the head, but she’s not badly hurt. Min Hyuk learns that the text message that called her out was sent from the same burner phone from five years ago. Chun Soo confirms that Yu Jung is Dae Chul’s daughter, so he goes to say hello. A few misunderstandings occur as he talks to Yu Jung and Dae Chul.
Woo Seok is bitter after he realizes he has mistaken Su Hee for Ji Sook. Meanwhile, Seo Jun finds out something strange about Yu Myung and Yu Ra and starts to look into Yu Ra’s secret. Woo Seok is shocked to see Mi Ri’s handkerchief with viola embroidered. Mi Ri tells Woo Seok that Su Hee told her a floral language of a viola, and he rushes out the door.
Su Hee faints the moment she sees Woo Seok. She’s sent to the hospital. He visits the hospital to see her again, but she’s terrified to see him for some reason. Min Hyuk decides to tell Su Hee who he really is, so he can ask her how she lost her memory. She still can’t remember a thing, and Min Hyuk asks her family to keep it a secret until he can find the culprit of the hit-and-run case.
Sang Tae decides to look into the past hit-and-run case that killed his brother, Sang Hyeon. Seo Jun notifies Su Hee that her store must be closed for the company to open a premium store for VIP customers. Meanwhile, Yu Ra finally reveals to the press that she had a miscarriage. Sang Tae agrees that Min Hyuk’s mother was framed for the hit-and-run.
Min Hyuk and Yu Jung get back together after the misunderstanding is resolved. Hwa Yeon tries to get Mi Ri to break up with Sang Tae to prevent Woo Seok from finding out about Seo Ji Sook. Min Hyuk asks Dae Chul to come to DL Group so that he can tell him about reuniting with Yu Jung. Dae Chul realizes that Koo Chun Soo, his hometown friend, is also working at DL.
Yu Ra provides proof of her pregnancy to a reporter to get rid of the rumors. Su Hee’s store wins Store of the Month, and she gets to have a meal with the chairman. Hwa Yeon hears about it and demands Mr. Koo to cancel it. Yu Ra doesn’t have a recording of Hwa Yeon’s secret anymore, so she goes to find Seo Ji Sook.
Tae Poong asks around to find Yu Jung and rescues her. Yet she loses consciousness and sees Seo Jun at the hospital when she wakes up, so she thinks Seo Jun rescued her. Yu Ra threatens Seo Jun, saying she’ll tell his father about Hwa Yeon’s secret. He doesn’t want to keep being swayed by her, so he comes up with a plan.
Yu Ra kidnaps Yu Jung so that she can find out where she hid Min Woo’s things. Yu Jung refuses to answer, while her family, Tae Poong and Seo Jun, wonder where she is. Hwa Yeon realizes that Seo Jun knows about what she had done to a woman named Seo Ji Sook in the past. When she finds out that Yu Ra told him, she bursts into her room.
Yu Jung tells Seo Jun about Yu Ra's fake pregnancy. Seo Jun takes the recording to Yu Ra and interrogates her. But Yu Ra threatens him instead with what his mother had done to Su Hee. Yu Ra figures that the recording will be in her way, and she plots to erase it from Yu Jung's phone. Tae Poong tells Yu Jung to stop getting back at Yu Ra, but Yu Ra can't stop.
Hwa Yeon prevents Woo Seok from seeing Su Hee's face. Yu Jung sees Yu Ra taking cold medicine and doubts that she's pregnant, so she brings a doctor to her house. Yu Ra decides to blackmail Hwa Yeon using what she heard from the study. She thinks she has Seo Jun to herself now, but he still insists that he'll be with Yu Jung. So Yu Ra tries to get rid of Yu Jung.
Yu Ra returns to Seo Jun's house once again and tells his family that she's pregnant. Seo Jun can't remember anything because Yu Ra put sleeping pills in his wine. Yu Jung doesn't believe Yu Ra, and she'd do anything to kick Yu Ra out of the DL Group family. She tells Seo Jun that she'll raise Yu Ra's child if that's what it takes to be by his side.
Yu Jung goes to Seo Jun's house and tells his parents that Dong Ho wasn't her child. She asks for their permission to go out with Seo Jun. Yu Ra is furious, so she goes to her parents and yells at them, only to get slapped by her mother. She somehow agrees to divorce Seo Jun, and he can't wait to tell Yu Jung about it.
Yu Jung decides to date Seo Jun in order to take revenge on Yu Ra for Dong Ho's death. Tae Poong wants to stop her, but she's blinded by grief. Yu Ra meets Jun Seok in person to tell him to leave the country, and Jun Seok ends up falling off the cliff. She doesn't know yet whether he's alive or dead. Sang Tae finds out that Mi Ri is Woo Seok's sister.
Jun Seok is attacked in bed, and Tae Poong rushes in to rescue him. They fail to catch the attacker, but Tae Poong knows it was Yu Ra's doing. Yu Ra goes to meet Jun Seok to stop him from seeing Seo Jun. She ends up harming herself to report him to the police for attacking her. Yu Jung returns to DL to help with the concert and figures out how to kick Yu Ra out of DL Group.
Tae Poong talks to Jun Seok about his big plan of taking Yu Ra down. Jun Seok agrees to the plan because he resents her for letting Min Woo die. Then, he calls Seo Jun to make an appointment the next day, saying that he has something important to share. Yu Ra hears about the appointment from Seo Jun and tries to stop them from talking to each other.
Yu Ra leaves the hospital to avoid Seo Jun, but Dong Ho dies while waiting for the transplant. Everyone, including Yu Jung's family and Tae Poong, is in despair. Yu Ra comes home and lies, saying her business trip was pushed back a day. Later, she gets a document proving that she's Min Woo's mother, so she goes to Tae Poong.
Dong Ho finds a match, but the donor can't do it because she recently found out that she's pregnant. Yu Jung's family and Min Hyuk persuade Yu Ra to get tested. Min Hyuk ends up giving her past records to save Min Woo. Yu Ra turns out to be a match, so she gets prepared under the condition that it's still a secret.
Min Hyuk tells Dong Ho that he can call him his father so that Dong Ho will shave his head for chemotherapy. Woo Seok talks to Seo Jun about Yu Jung and tells him how foolish he is. Dong Ho's results turn out to be fine, so he comes home. Not long after, the hospital calls Yu Jung to give her the bad news.
Dong Ho is suspected of having leukemia, so the doctor runs a few tests. He's diagnosed with acute lymphocytic leukemia, and everyone, including Tae Poong and Seo Jun, finds out about it. Dong Ho stays in the hospital to treat his leukemia. Tae Poong and Seo Jun both try to help Yu Jung and Dong Ho.
Seo Jun tells his family that he's divorcing Yu Ra. The whole family is shocked, and Yu Ra tries to stop the divorce. Min Hyuk gets to spend a day with Dong Ho and hears that he wants him to be the father. He finds an odd bruise on Dong Ho's arm. After Dong Ho goes home, he starts getting a nosebleed.
Yu Jung and Tae Poong decide to break up with each other due to the circumstances. Dong Ho gets lost and ends up calling Tae Poong. Tae Poong and Yu Jung return home with Dong Ho, where Yu Jung's mother is waiting because she's still suspicious about the relationship between the two. Dong Ho asks Tae Poong to come and see him sing at his kindergarten.
Seo Jun ends up helping Min Hyuk get released from the police station. He asks Min Hyuk to break up with Yu Jung. Min Hyuk says no, and Seo Jun hurts his hand when he punches the wall out of anger. Yu Jung and Seo Jun go to a meeting together, where he punches the other contractor when he sees him harassing Yu Jung.
Tae Poong gives Yu Ra the last chance to come clean, but she decides to fake an accident to get him arrested instead. She falsifies enough evidence to make the police think he instigated the car accident she's planning on getting into. Everyone hears about her car accident, and then Tae Poong gets arrested by the police.
Dong Ho and Sook Ha suddenly disappear, and everyone falls into panic. Yu Jung asks Yu Ra about Dong Ho's whereabouts, but she keeps saying she doesn't know anything about it. Min Hyuk also tells Yu Ra that he will not stand still if Yu Ra messes with Yu Jung's child. He starts his revenge as Tae Poong.
Yu Ra tries to dig into the truth about Tae Poong's death after her gynecologist told her she was Tae Poong. Yu Jung tells her he died five years ago, but Yu Ra hasn't the slightest doubt that Min Hyuk is actually Tae Poong. She tells his mother to take Min Woo and go to the US before Min Woo's birth certificate gets out.
Tae Poong finally goes to Dae Chul and explains the situation. Dae Chul promises to convince Yu Ra to come clean, but she refuses to do so. Min Hyuk still tries to expose Yu Ra's lies, but she won't easily let him. She decides to invite Seo Jun, Yu Jung, and Min Hyuk for dinner to tell Min Hyuk that she's onto him.
Min Hyuk sends a thermal mattress to Hwa Yeon so that Dae Chul can find out where Yu Ra lives. Yu Jung wants to quit her job to protect Min Hyuk from Yu Ra. Min Hyuk blackmails Yu Ra to let Yu Jung keep her job. When Dae Chul sees Min Hyuk's face for the first time, he's convinced that it's Tae Poong.
Yu Ra threatens Tae Poong and says he must cooperate if he doesn't want Seo Jun to find out about the relationship between Tae Poon and Yu Ra. She also threatens Yu Jung to quit her job. Seo Jun sees a picture sent by Na Young and finds out that Yu Jung went to the same school as Yu Ra. Meanwhile, Seo Jun continues to have doubts about Yu Ra's father, so Yu Ra has no choice but to call in her fake father again.
Ju Seol tells Yu Jung that he'll sue her. It turns out Yu Ra told Sook Ja to send her the pictures of Ju Seol's notebook. Yu Jung and Min Hyuk find out about it, but Yu Jung wants to let it slide because it will harm her mother. She still wants to apologize to Ju Seol, so she waits outside of his workshop.
Yu Myung gets arrested for design theft. However, it turns out that the design belongs to DL Group, and the company has already filed a complaint about it. So Yu Jung asks Seo Jun for help, but when Yu Ra sees Yu Jung with Seo Jun, she flips out. Meanwhile, Seo Jun tries to persuade the board to drop the charges against Yu Myung, but it won't be easy.
Min Hyuk goes to find Yu Jung to tell her everything about what has happened to him so far. However, to everyone else, he still wants to keep it a secret that he's Tae Poong since he's still looking for the person behind his mother's death. Yu Ra uses Hwa Yeon to keep her marriage, while Seo Jun uses Woo Seok to break up the marriage.
Min Hyuk decides not to tell Yu Jung that he's Tae Poong to prevent Seo Jun from finding out and getting hurt. But he still wants to spend time with his son, so he keeps giving things and helping Yu Jung and Dong Ho. Hwa Yeon suggests to Yu Ra that she have a test-tube baby without letting Seo Jun know.
Dong Ho safely returns home. Yu Jung's team works on a collaborative project, so Seo Jun, Yu Jung, and Ye Jin meet the dye expert, Ju Seol. Seo Jun wants to be on better terms with Yu Jung, but she doesn't let him. Min Hyuk finally realizes the shocking truth, so he decides to tell Yu Jung that he's Tae Poong.
Yu Jung gets herself together and goes back to work. Seo Jun was worried about her but decided not to ask her about it. Yu Ra uses Seo Jun's parents again to make him meet her friends at dinner. Dong Ho goes to the playground with Sook Ja's brother, Bong Jun, and gets lost. Yu Jung looks for him and calls his name, but accidentally calls him "Min Woo," and Min Hyuk hears it.
Yu Ra finds out that Seo Jun had feelings for Yu Jung, so she quibbles over her relationship with Seo Jun. Yu Jung tells her that she is not in a relationship with Seo Jun, but Yu Ra won't believe her. Hwa Yeon threatens Seo Jun to sort things out with Yu Ra, or she'll kick Yu Ra and her family out of the country. Meanwhile, Tae Poong calls Yu Jung, but someone else receives his call instead.
Yu Ra rushes into Seo Jun's hotel room, thinking he was cheating on her. She realizes she misunderstood, and Seo Jun decides to get divorced to make things better with Yu Jung. Yu Ra thinks Ye Jin is the girl having an affair with Seo Jun because of the purse Yu Jung lent her. She slaps her in the elevator when the door opens, in front of Seo Jun and Min Hyuk.
Yu Ra gets furious after Seo Jun stands her up. Seo Jun introduces Yu Jung to Min Hyuk as his first love. Yu Jung worries if Min Hyuk has misunderstood things between her and Seo Jun. Meanwhile, Yu Ra finds out that Seo Jun bought the purse for someone other than her and has a man follow Seo Jun to figure out who Seo Jun has been seeing.
Seo Jun and Yu Jung finally meet after five years, but they don't have much time to catch up before the important online fashion show. Yu Ra gets to introduce Seo Jun to her colleagues since he said he'll make time. One of the employees of DL loses a pair of pants for the show, and Yu Jung gets the blame. She manages to fix it, and the show ends successfully. Yu Ra is waiting for Seo Jun, but he has dinner with Yu Jung after a long day.
Min Hyuk plans to make Seo Jun and Yu Jung meet again to separate Yu Ra from DL Group. Sook Ja is offered a part-time job as a housekeeper, and it turns out it was at Yu Ra's house. Yu Ra forces her out, worried that she might get caught. Min Hyuk suggests special recruitment to Chairman Cha to let Yu Jung into DL Group as a regular employee.
Yu Jung wakes up with a serious headache. She remembers how she acted last night and regrets it, feeling embarrassed. Some men come to Sook Ja's house and harass her, demanding she pays them the money she owes. Yu Jung can't handle seeing her mother so scared, so she says she'll pay the money back instead of her. Meanwhile, Yu Ra plans to appear on the show with Seo Jun to establish herself as Seo Jun's wife.
Min Hyuk realizes that DL was behind his mother's death, so he tries to find a way into the group. He finds a connection, who is Seo Jun, to get what he wants. Yet the former prosecutor, Prosecutor Kang, who was in charge of his mother's case, just filled an opening in the DL legal department. He looks for proof of the new chief legal officer's irregularity. Seo Jun is still unhappy with his marriage, and Min Hyuk gives him a reason to dislike Yu Ra even more.
Yu Ra tells Seo Jun's parents that she wants to move in with them after the wedding. Min Hyuk meets the prosecutor that was in charge of the hit-and-run case five years ago, but something seems fishy. Yu Ra hires fake parents to take to the parental meeting before the marriage. Min Hyuk keeps digging into the case, including the people involved. He's preparing for a surprise at Yu Ra's wedding and discovers the shocking truth that was behind his mother's death.
Min Hyuk falls into Yu Ra's trap and eats a salad with shrimp powder on it, put there by Yu Ra. He barely manages to escape the crisis. Then, Yu Jung finds Min Hyuk on the street, and he encounters a crisis yet again at the hospital. Yu Ra's plan to use Hwa Yeon to get close to Seo Jun falls apart, so she finds another way to get to him.
Kyung Hye is arrested for a hit-and-run because there was a witness who testified against her. Sang Hyeon dies, and his family has a funeral for him. Tae Poong and Yu Jung try to get Kyung Hye out of jail by finding evidence that she wasn't at fault. They succeed in proving the witness's testimony is false.
Yu Ra is worried about what Jun Seok will tell her mother-in-law. Sang Hyeon's family rushes into the hospital to see Sang Hyeon in critical condition. Kyung Hye has a lot on her mind, trying to deal with Yu Ra's ex-boyfriend while also digging into the irregularities made by the foundation at the same time.
Yu Ra decides to register her marriage as soon as possible, and Kyung Hye wants to be there. As Yu Ra is about to submit the papers, someone sends her a text message telling her to stop. The messages tell her to go to a clinic with her mother-in-law, or else the photo with Jun Seok will be sent to Kyung Hye.
Tae Poong’s mother meets Ji Yeon at the welfare center and invites her to dinner. Ji Yeon seems like the best possible potential spouse for Tae Poong. Yu Jung spies on Ji Yeon in the restaurant while she’s at work and quickly discovers how horrible she is. Then, Yu Myung takes Tae Poong to a party and loses him.
Kyung Hye meets Ji Yeon through a marriage matchmaking service. She likes her right away and introduces her to Tae Poong. Meanwhile, Yu Ra takes a pregnancy test. When she discovers she’s pregnant, she decides to marry Jun Seok. They travel to Jun Seok’s hometown for the wedding, where his family awaits.