After two decades away, Mary Ann arrives in San Francisco for Anna Madrigal's 90th birthday party. But not everyone is happy to see her.

Mary Ann decides to stay in San Francisco and tells Shawna true. The relationship between Jake and Margot comes at a crossroads. Anna knows a man.

Anna receives a threat. Mary Ann tries to make amends with Brian. Jake and Margot go to the party where Jake's Sister is going to reveal the sex of her baby.

Mary Ann and Shawna team up to investigate Anna's problem. Michael is looking for a new house. Shawna opens up with Claire.

Everyone looks for Anna after a health problem. The twins bring together social influencers at DeDe's house. Mary Ann and Brian have a candid talk.

Shawna tries to learn more about her story. Mary Ann helps Sam investigate Anna's past. Benn changes his mind about Michael's house.

Racing against time, Mary Ann, Michael and Brian follow leads to learn who's threatening Barbary Lane. Anna seeks forgiveness from an old friend.

Mary Ann asks everyone to help Barbary Lane and tries to get along with Shawna. Michael spends the night with old friends and argues with Ben.

The conflict at Barbary Lane comes to a head. Jake and Margot clear the air. A night of celebration leads to an unexpected discovery in the morning.

In a flashback to the 1960s, Anna arrives in San Francisco, befriends some trans women and starts dating a man. But she soon finds her loyalties tested.