The third Kerkovich sister, Brooke, is the alpha sister of the group, and Jane has the daunting task of planning a wedding for her more perfect and exquisite older sibling. Meanwhile, Brad is having a tough time himself dealing with Brooke's equally more perfect African American fiance, Elliot, and Alex and Dave have a big secret they're hiding.
Penny's mom, Dana, and Dave's dad, Big Dave, are in town visiting, and these two lovebirds are not only going strong, they've decided to adopt a baby together, prompting Penny and Dave to react the only way they know how - irrationally. Meanwhile, Brad and Jane decide to try to join an exclusive tennis club, but unfortunately Max is on the scent and they can't shake him...or Alex.
Chase, the ex-roommate whose life Max ruined, says he'd like to take revenge and do the same thing to Max, but Max's life is so pathetic it's "un-sabotagable." Max vows to prove him wrong and asks Jane to help him get his act together. Meanwhile, Alex asks the rest of the gang for help when Dave challenges her to finally use her stockpile of Groupons.
The gang is shocked when Penny rebounds from her breakup with Pete by having a torrid affair with the last man on earth they'd pick for her -- the Car Czar. To make matters worse, she's temporarily living with Brad and Jane, who end up acting like disapproving parents. Meanwhile the friends pressure Max to get a job so he'll stop sponging off them.
With the wedding coming up, Penny decides to reach out to her estranged dad Roy. The reunion is sufficiently awkward but Alex encourages Penny to be optimistic, while Jane is more skeptical. Meanwhile, Dave enlists Brad and Max's help in sabotaging "The Brazilian" food truck, a.k.a. Dave's #1 nemesis, but Max accidentally falls for the enemy's son and has to choose between his best friend or boyfriend.
When Ryan, Jane's ex, comes to town for a visit, Brad is surprised to learn that Ryan is a woman. Meanwhile Max gets a super cool new roommate, Chase, who immediately upgrades the apartment with expensive furniture and gadgets. The gang is in awe, but when Chase suddenly disappears, they start snooping into his private life.
Alex signs up the gang to participate in the Northside Kickball Classic tournament. However, self-appointed manager Max has difficulty bringing his players up to scratch - Dave has a history of freezing at crucial moments after an unfortunate incident during a previous game, Penny uses the tournament as an opportunity to meet good-looking guys and refuses to put on appropriate footwear, while Jane abandons her friends altogether and started playing for another team.
When a hot young pop star stops in and buys a dress at Alex's store, Penny helps Alex turns it into a press opportunity. Meanwhile, Max is having an identity crisis, so Jane and Derrick take him on a tour of Chicago's themed gay bars to help him find his niche, and Brad and Dave try to be "men" and fix things around the house.
Jane and Alex's parents throw a big celebration to commemorate the 20th anniversary of the family mattress business, and Jane agonizes over coming up with an amusing toast to spring on her humorless dad. Meanwhile, Alex tells Dave that her parents are unaware that they are once again bedfellows, and Max goes looking for a new BFF since Penny's tied up in her relationship with Pete.
Penny meets a terrific new guy, Pete, but her frantic attempt to hide the fact that she's wearing a prescription helmet because of her concussion really limits their potential romance. Jane tries to break into the "boys' club" at the car dealership and enlists Brad to be her "trophy wife". Max and Dave's fist bump issues bring back painful childhood memories.