Vicki is torn between spending the evening with her on-again-off-again beau Brooks and babysitting her grandson Troy. Meanwhile, Lydia convinces Alexis to finally meet with Tamra for the first time since their epic fight. Gretchen visits a fertility doctor, and Lydia tries to accept that her mother won't stop smoking marijuana. Then, Tamra gives a powerful speech at the Los Angeles Women's Expo where she reveals shocking details of her past that she has kept secret for years.

In part two of Tamra's Mexican bachelorette extravaganza, Vicki steals Tamra and Lydia away for a night of drunken debauchery, leaving Gretchen and Heather furious. It's all poolside drama when Gretchen and Vicki finally have it out, but Tamra makes a bigger splash when she reveals details of her past to Gretchen. The trip goes from crazy to nuts when Mexican strippers show up, but can Lydia's virgin eyes handle such indelicacy without sending her running for the exit? Back in Orange County, Alexis begs Jim for a gift he's just not willing to give.