Bobbie's reverse psychology seems to backfire when she encourages Reggie to accept an astonishing invitation to be a sperm donor for an anonymous female acquaintance. Also, Dean introduces Mel to the joys of bulk shopping with disastrous results, after Malena insists the household duties be split evenly.

As Mel and Malena's first wedding anniversary approaches, Mel wants to plan something truly memorable for the occasion. Dean warns him not to do anything that he cannot easily outdo next year. Malena's obsession with re-creating the night Mel proposed marriage--complete with the most insignificant details--threatens to disrupt the celebration. Meanwhile, after accidentally snacking on the ceremonial leftover piece of Mel and Malena's wedding cake, Reggie tries to atone by helping Sheri bake a new cake to match it.

Mel and Malena's neighbor Mark announces that Deborah is pregnant. With the overly ambitious help of her assistant, Lana, Malena plans a celebration and forces the guys to come too. To Sheri's surprise, Dean has a great time looking at the cute gifts of children's clothing and choosing baby names with Deborah. Meanwhile, no longer dating Bobbi, Reggie brings a sexy date to the baby party, trying to make Bobbi jealous; but Bobbi has a handsome date of her own.

Deborah breaks up Dean's guys-only weekend when her water breaks and the men must rush her to the hospital. But a blizzard forces them to take the train, where they become trapped during a power outage. Meanwhile, Malena, Bobbi and Sheri's girls-only weekend also disintegrates as they spar over who was invited.