As the Cohens prepare for Kirsten's 40th birthday party, Kirsten gets some news that will change her life forever. Meanwhile, Julie is having a secret love affair--and Kaitlin is doing everything she can to stop it. While Ryan acts as if he doesn't miss Taylor, she visits a therapist who gives her some rules to live by. After Seth & Che's (recurring guest star CHRIS PRATT) plan to save Newport's groundhog goes awry, Che finally realizes that Seth is not his soul mate. & Sandy & Kirsten have surprises in store for each other.