To Mother Buchanan's initial delight, Bree joins the Buchanan clan. Her three sisters-in-law-to-be are initially displeased with her tacky antics and naivety, which have Mother Buchanan thinking she can control her new daughter-in-law. But when Bree politely refuses to wear Mother Buchanan's wedding dress, the war is on! It's up to Alex, Vivian, and Delilah to explain to the girl the inner workings of the family. Alex explains that Mother Buchanan would qualify for sainthood if it weren't for one tiny factor: ""she's a bitch!""

When newlywed Bree's lovelife becomes non-existant (since her husband, Jesse, can't get aroused in the same house with his mother), they decide to stay with Alex. This invigorates their sex life temporarily, but Jesse soon begins leaving the house early and coming home late, leading to suspician that he's with another woman. But no one ever dreamed that the other woman would be Mother Buchanan!