For her birthday, Paul surprises Cathy with a party just when Lenny has invited her to an art opening on the Bahamas. At the party, Cathy's brother begins a fling with Cathy's eccentric college friend Rebecca. Meanwhile, picks up Marlene who is wandering around in the backyard.

Dr. Todd tells Cathy that she’s been rejected from the clinical trial. Sean sets up Marlene on a date. At a party, Adam gets into a fight with Andrea. Cathy and Lenny take ecstasy together. Paul catches Cathy and Lenny having sex. Paul gets too drunk at the dinner to celebrate his promotion, forcing Adam to drive home. Paul tells Cathy he wants a divorce.