After learning that Angie's ex Derek lives near Space Camp, Will convinces Angie to confront him about leaving her when she was pregnant, which results in a rowdy and awkward encounter between the three of them. Meanwhile, Poppy internally struggles with who she truly has romantic feelings for.

Will feels like everything is changing as Sophie returns home from camp a seemingly different person and as he loses out on being room parent to Douglas. Meanwhile, Miggy gets a new temp job at Angie’s law firm to help him earn more money to go toward Jack’s preschool costs, but he ends up discovering he may like the position more than anyone expected.

Angie is sent into a tailspin when her long-absent ex-boyfriend Derek, Graham's father, suddenly appears on her doorstep. She asks Will and Miggy for help because, despite his faults, she can't resist Derek. Meanwhile, Douglas and Poppy try for a romantic second date.

After Angie decides it’s finally time for Graham to meet his dad, Dere, sickness overtakes the household. Derek is forced to either step in and help or head back out to his van. Meanwhile, when Sophie overhears some big news about Will and Tracy, she takes it upon herself to intervene; and the twins face their first professional failure.

While Graham joins Derek at Ratso’s for a day of father-and-son bonding, a jealous Angie enlists Douglas to help her make sure they don’t bond too much. The twins and Rory eat all the food in Douglas’ house to save his life, and Poppy and Miggy try to help Will with a dating situation named “Kay,” only to have it backfire.

Angie attempts to help Poppy through her situation with Douglas, only to be confronted by the fact that she might have feelings for Derek again. Meanwhile, Will distracts himself from thinking about Angie by smothering Douglas with a little too much love and support, causing him to look for comfort in the last place he expected to find it.

Angie struggles to recall the events of a wine-filled night of packing with Will, while Poppy secretly encourages Will to share his true feelings. Meanwhile, Derek arrives to gather Angie and her belongings, while Rory and Miggy are enlisted to find a hot guy to sublet the house.