Lucy, Kevin, and Savannah move back to her parents' home where there is one mother too many. Annie tries to impart her mothering skills on Lucy, who has different ideas. Ruthie sees an opportunity to get a favor from Martin.

The cast shows their singing skills as the express their feelings about Valentine's Day. Simon starts dating another gal. The twins celebrate their birthday.

Lucy seems to only have time for Savannah, and Kevin feels left out. Vincent's new girlfriend is a snob who looks for ways to insult others. Zoe confides in Ruthie that their family does not have enough money for food. The twins are sick.

When Simon visits home to write a paper, the twins are just happy, the sisters speculate what trouble he's in; dad guesses his Bible reading is a pact with God for a clear bill on his venereal disease test. Zoe convinces Martin to join her watching a meteor shower for an astronomy assignment, but he leaves his cell phone afraid to tell Eric as it's at night, and thus misses a persistent caller- from Iraq. Lucy wants to return to parish work, but Kevin refuses to dump their baby on her ma, even prefers doing night-shifts or becoming a home dad. Ruthy's ex Peter Petrowski's parents George 'Vic' and Paris ask Eric to remarry them. Ruthy's boyfriend Vincent is offended she nags about Peter saying not to feel anything for her anymore.