Addison and Pete treat a recently married couple who are having sexual problems. Cooper is trying to figure out why four siblings are all suffering from the same mysterious illness….

In a follow up to last season’s “Peter” flashback episode, the all-new “Six Months Later” episode revisits a poignant period of time for both the Bishops and Olivia.

When Peter’s favorite kiddie show gets canceled, he decides to create and star in his own. Meanwhile, Meg starts an internship for Dr. Hartman.