Wilson is amused that all the Camdens call him after Mary's sudden return home, but wants her to tell them what happened. Robbie makes clear he's no longer interested at all in her or Lucy, having found a potential bride. The siblings however are furious when their wayward sister gets the royal treatment from their mother, while their better behavior yielded nothing. It's the last straw when the garage apartment they all want is thrown in, so they squat. Annie declares a war of attrition on them. Eric cowardly keeps out and hopes his sermon on the prodigal son may smooth things, but everyone feels targeted.

Robbie is happy with his new hot Latina girlfriend Joy Reyes and persuades her rich, devoutly Catholic father Ramon Reyes (for now) of his honorable intentions. The garage apartment squatters' resolve is self-sabotaged by their rivalry to get what shouldn't be Mary's and Ruthie's scheming. In the end return under the maternal yoke and make up (more or less forcibly) with Mary, who meanwhile repents, but Eric wisely doubts her sincerity and rectitude.

Robbie has spent too much time with Joy on top of his two jobs, so he demands a day off to study. She insists 'just this one day' and Eric convinces Robbie he should at least find out if it's a special day. On his way, he finds and picks up a stray dog tagged in Arizona. It turns out to be the pet who disappeared exactly two years ago with Joy's kid brother Joseph, and might now lead the police to the boy and his abductor. At home, the girls ask their parents to select ideal partners, leading to lots of speculation. Matt and Simon's attempt to pick up suitable girls by walking the twins backfires.

Simon's big day, the start of his driving lessons, finally arrived, but Eric just forgot about it. Grandpa Jackson seduces the knave into driving him around without a license, which leads through more bad grandfatherly advice to a televised police car chase. Jealous of Joy, Matt behaves childishly toward Robbie whose gentleman's attitude ultimately gives in. Lucy hoped Jeremy called to make up, but he just wants his engagement ring back. The local fire chief isn't fooled by Mary's eagerness to transfer.

The next Valentine's day, Robbie prepared a surprise for Joy. Mary meanly supposes the hotel she overheard him contacting by phone means another sex trap. Joy, who assumed the butler to be away like her father really is, isn't discouraged, but bitterly claims Robbie doesn't love her truly because he refuses to risk getting intimate. Matt contacts all his 'true lovers', wondering why he never stayed hooked up. Lucy again assumes Jeremy, who is back in town and double-dating with Mike, wants her back and pretends to have a date. Mary is shocked to see Wilson moved back and goes steady with her former school friend Corey Conway. Simon gets permission to let his hot senior date Maria 'help babysit' and gets her cute kid brother Jake to spare Ruthie dateless embarrassment.

Level-headed Robbie is the only one intentionally left home to babysit the twins when the Camdens accept a first dinner invitation at humorist Rabbi Glass's home. Mary beats Lucy to the punch faking illness so she can escape the event and try to seduce Robbie away from Joy. Simon takes his half-Jewish friend Morris along, but he fails miserably as a good example of someone from a mixed-faith household: he has no clue about the Sabbath or other Jewish traditions. Eric loses it completely when Matt says he's considering converting to Judaism, but they make up during a synagogue service.