The Conners gear up for a megawedding! Jackie and Neville, Darlene and Ben, and Harris and Aldo are planning for a shared big day, but along the way they discover that some of the couples may not be on the same page about their happily ever afters. Meanwhile, Dan and the family have decked out the house for the occasion, but will all six of the lovebirds make it to "I do"?
Darlene struggles to cope with the stress of construction; and after a serious accident, she reevaluates everything and makes a life-changing decision. Elsewhere, Lou, a familiar face from the past, returns as Mark's combative contrabassoon teacher; but after he butts heads with Mark, Dan steps in, only to realize that their similarities may outweigh their differences.
Darlene falls in love with a house she’s looking at, but when the realtor shares she has a better chance of getting the house if she’s part of a couple, she convinces Ben to pretend to be her partner. Meanwhile, Becky and Professor Davis continue to try and keep their relationship a secret, but secrets are hard to keep
Darlene continues to navigate her breakup with Ben, and when she and Becky head to the movies and see Ben on a date, Darlene can’t stop herself from interfering and making everyone uncomfortable. Meanwhile, Dan offers to talk with Aldo’s dad, Jesse, when he doesn’t approve of Harris and Aldo’s relationship
The Conner home is decked out for Halloween, despite the leak in the roof that forces Dan and Louise to cancel their honeymoon. Becky surprises the newlyweds and takes them on a virtual adventure around the world. Meanwhile, Darlene continues her spiritual journey, and Harris introduces Aldo’s children to the family.
Part of Becky’s recovery program mandates she make amends with people she has lied to over the years, leading her to meet up again with former high school friend Mikey to apologize for lying to him about her living a successful life. Meanwhile, Darlene visits with Pastor Phil, and Louise continues planning her wedding.
After Ben declines Darlene’s proposal, she starts to ponder why she tends to be so negative in life, prompting her to start a journey of self-discovery which leads to Pastor Phil. Meanwhile, newly appointed City Councilman Don Blansky puts Jackie in a tough position as she and Neville are ready to open the new and improved Lunch Box.