After nearly getting into a fight with his ex-wife's new boyfriend, Charlie, an ex ball player turned professional therapist, decides that he needs therapy himself.
Charlie creates more problems for himself when he tries to spare the feelings of a former "slumpbuster" from his baseball days who has tracked him down.
Charlie falls for Jen's hot new business partner, Lori (Denise Richards) only to find she thinks therapy is a scam. In the therapy group, Patrick asks Charlie to counsel the angry ghost of his mother, who he believes is haunting his apartment.
Charlie finds out that the woman he's dating is Kate's patient, but he has sex with her anyway. Meanwhile, he encourages his therapy group to call each other when facing moments of weakness.
Charlie gets an unexpected visit from his hyper-critical, bullying father, who tells him he is moving to town to be closer to him; in the therapy group, Charlie attempts to help Lacey with road rage.
Kate is worried that Charlie is becoming attached to her, Charlie and Jennifer think their daughter Sam is a lesbian, and Charlie tries to celebrate a breakthrough with his anger therapy group.