It is raining on Wisteria Lane, six months after Mike was run over. He is now in a coma, with Susan by his side. Bree gets engaged to Orson. Gabrielle and Carlos are getting divorced, but they are briefly reunited when their 8½ months pregnant surrogate Xiao-Mei runs away. While adjusting to having another child around the house, Lynette realizes that the girl's mother, Nora, is more than she can handle.

It's wedding day for Bree and Orson but things don't go quite as planned. Meanwhile, the body of a dead woman believed to be Orson's ex-wife is recovered, which interrupts the reception. Susan goes on a date with Ian, but trouble ensues when his in-laws show up at the restaurant. When Nora breaks up with her boyfriend, Lynette decide to hook up Nora with someone. Edie lets her 18-year-old nephew Austin come live with her for some time. Lastly, Xiao-Mei goes into labor.

Susan professes her love for Ian. Gabrielle and Carlos try to rekindle their love. Bree is confronted with Orson's past. In the meantime, Nora and Lynette go to war.

The residents of Wisteria Lane celebrate their annual holiday block party. Meanwhile, Gabrielle sets her eyes on a father of a girl she's coaching. Mike is arrested for Monique's murder. Thanks to Lynette, mothers of the neighborhood arrange a protest against Art. This causes his sister a heart attack. And Susan has to cook dinner for Ian's parents.

Tom and Lynette try to make Kayla feel like a part of the family. Alma Hodge decides to pay Orson and Bree a visit. Susan visits Mike in jail to tell him about the lawyer Ian got him. Gabrielle accuses Carlos of trying to sabotage her relationship with Bill. Bree organizes a dinner party to show Susan that Alma is alive.

Bree isn't happy Alma has moved to Wisteria Lane. Gabrielle's secret admirer is revealed. The new Scavo Pizzeria faces an uncertain future. Julie and Austin go to Edie about giving them parental consent to buy birth control pills.

Gabrielle cannot avoid Zach. Mike's new lawyer suggests he pleads guilty, but Susan doesn't agree with that. Gloria informs Bree that she and Alma believe Bree is the other woman. Instead of going back to work Lynette pretends to be ill so she can help Tom promote the pizzeria at a food fair.

Ian proposes to Susan. The Scavo pizzeria prepares for its grand opening. Mike visits a hypnotherapist in hopes of remembering Monique. Gabrielle's romantically interested in a lawyer, but he's working for Zach who wants her for himself. Bree is hospitalized after a fall, after being tricked to climb on a ladder to retrieve Monique's teeth.

All of Wisteria Lane gathers at Pizzeria Scavo for the grand opening event, while one resident meets an untimely fate and another accepts a marriage proposal.

Everything that begins must eventually end. This episode of beginnings and endings walks us both backwards and forwards as we take our final stroll down Wisteria Lane.