Looking to give her life a purpose, Gabrielle decides to organize a glamorous Halston fashion show for charity highlighting the ladies of Wisteria Lane. Bree and Rex are at odds on how to punish Andrew for putting Mrs. Solis in the hospital and finding drugs in his room. The police investigate a toy chest that Paul Young dumped in the river. Lastly, Lynette uses her business acumen to poach a nanny, Claire, but ends up getting involved between her current employer, Alexis.

When Lynette's father-in-law pays a visit to to the family, she unwittingly learns a family secret. Meanwhile, Susan is disturbed by Julie's growing romance with Zach. Rex attempts to reconcile with Bree as she tries to play hard-to-get. Lastly, Gabrielle is shocked when John's parents ask her for a favor in convincing John to move back home as he officially turned eighteen and no longer wants to live at home and trying to pursue a relationship with Gabrielle.

Mike Delfino is questioned about Mrs. Huber's murder by police and is arrested. John's friend, Justin attempts to blackmail Gabrielle with his knowledge of their affair. Meanwhile, Tom wants a big promotion, but Lynette fears that she'd be home alone with the kids more than ever and tries her best in discouraging him in taking the job. Also, Bree is shocked when she finds a condom. Zach Young plans a pool party for the teens on Wisteria Lane, and things get out of hand. Finally, someone comes out of the closet.

Susan and Mike decide to move in together, much to Edie's displeasure. Meanwhile, Lynette takes steps to make sure Annabel doesn't come between her and Tom. Also, Bree comes to a realization about her "buddy" George the pharmacist who continues to interfere in her and Rex's lives. Carlos' legal problems take a turn for the worse, when Gabrielle decides to leave him. Mrs. Huber's journal reveals some secrets. Lastly, two new faces arrive on Wisteria Lane.

Bree confides that she feels guilty because she and Rex were having a fight when he had his heart attack and that now he needs a pacemaker. Lynette's marriage takes a dramatic turn after an upset Tom vows that it is now her turn to go back to work and he'll be staying home with the kids. Carlos finally learns that John and Gabrielle have been lovers for a while, and vows revenge as he is carted off to jail. Mike takes Paul out to a deserted quarry, intending to shoot him.

Lynette tries to put a daycare center in Parcher & Murphy by recruiting employees' children to get the program started. Gabrielle and Sister Mary Bernard face off over Carlos' mission of mercy to Africa. Bree brings Andrew home and tells him about the revelation of George poisoning his father Rex and killing him. Lastly, Susan confronts her biological father's wife after she thinks they are having an affair.

Gabrielle kisses Tom and Lynette is not happy and drives a wedge in her friendship with Gabrielle. Paul attacks Mike. The housewives become more suspicious of Betty and her family. Andrew is trying to blackmail Bree, but Bree gets some assistance from Susan's ex, Karl.

Carlos and Gabrielle decide to adopt, but the process comes to be a lot more difficult than either had expected. Susan finally has her surgery as she finally has medical insurance. Meanwhile, a showdown between Bree and her son Andrew lead to a full out war between mother and son. Also, a dying Noah Taylor learns more about Paul Young and his biological grandson Zach. Lastly, Tom is having more difficulty at the job when having to take orders from his boss and wife Lynette.

Susan invites Dr. Ron to meet Karl after he finds out about their arranged marriage. Lynette is surprised that a woman at work is still breastfeeding her child of five. Gabrielle becomes very picky when choosing a birth mother, and a beautiful baby. Bree has to deal with a fresh accusation from Andrew, that of repressed memories.

Lynette is called in to her kids' school as Parker has gone from being obsessed with Dinosaurs to being obsessed with nudity. Carlos and Gabrielle must go to court to get custody of their baby. Bree's father Henry and stepmother Eleanor come to town to mediate between Andrew and her. Susan is convinced that Karl doesn't really love Edie. Later, she goes to a movie theater, and spots Mike with a date.

Bree and Andrew finally reach an impasse in their relationship as tension has finally reached a critical point. Meanwhile, Ed finally fires Tom with the pressure from his wife. Lastly, Edie's private detective begins to uncover numerous details of Karl and Susan's relationship as of recently. Gabrielle is having a tough time keeping her servant in the country.