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 tell Shawna the truth. Jake and Margot face a crossroads in their relationship. Anna meets a new man.

Anna receives a threatening message. Mary Ann tries to make peace with Brian. Jake and Margot negotiate a family gender-reveal party and its aftermath.

Mary Ann rallies the crew to save Barbary Lane and tries to connect with Shawna. A night with Michael's old pals stirs up drama between him and Ben.

Mary Ann and Shawna team up to uncover what's going on with Anna. Michael searches for a new place to live. Shawna opens up to Claire.

Everyone looks after Anna following a medical incident. The twins fill DeDe's house with social influencers. Mary Ann and Brian have a heart-to-heart.

Shawna digs into her history. Mary Ann helps Sam track down information on Anna's past. Ben has a change of heart about Michael's housing situation.

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.

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

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.