Bette Porter and Tina Kennard have been a couple for seven years, and they want to start a family. Their next-door neighbor, Tim Haspel, is excited that his girlfriend, a talented young writer named Jenny Schecter, is moving in with him. But soon mixing with Bette and Tina's circle of lesbian friends, Jenny learns that her midwest university education may not have prepared her for what she will learn about life, lust, and love in Los Angeles.

Tina tries to get over her concerns about the new sperm donor. Tim decides to throw a dinner party and invites Marina, making Jenny feel uncomfortable. Alice runs into her abusive ex-girlfriend. Dana has her eye on a chef, but is hesitant to make a move on her.

Jenny confides in her old college professor about her affair with Marina. Bette receives some delightful news. Dana's fears of being outed continue as she juggles between her tennis career and Lara. Alice's mother comes to stay with her daughter.

Dana is invited to a dinner party for Subaru, who want to sponsor her tennis career, but Lara is hurt when Dana takes her male doubles partner instead of her. Meanwhile, Tim is shocked when he catches Marina and Jenny in a compromising position, Alice tries to sort out the problems with her mother, and Bette tells her father about Tina's pregnancy, but is upset by his reaction.

After arriving home, Tim starts to worry when he learns that Jenny has vanished. Bette travels to New York for an art opening and her relationship with Tina is put to the test. Back in Los Angeles, the sperm donor's girlfriend discovers a lonely Tina and starts to harass her.