A new patient in Charlie's group claims to be the Devil, and Nolan sells his soul to him to get Lacey to love him. Jennifer and Sam take an interest in their new neighbors, and Martin tries to get Charlie back to church.
Sean is jealous when Charlie keeps sleeping with Jen after he tells Charlie that he wants her back, so he looks to get revenge. Meanwhile, the therapy group helps to make Patrick unattractive so that he can find a new man.
Charlie begins dating a private investigator, who challenges him to try and cheat on her without her realizing. Meanwhile, Lacey works as a nude model for Patrick's art class, causing Nolan to take a sudden interest in art.
Charlie begins dating his computer nerd ex girlfriend again, who then hacks into his computer and takes over his life. Meanwhile, Lacey launches a plan with Patrick to trick her rival into having sex with Ed.