Summer has a new boyfriend, Zach Stevens (Michael Cassidy). Zach is starting to become friends with Seth, whom he met shortly before Zach and Summer started dating, yet their friendship is a little mixed since they both have feelings for Summer. Summer seems committed to putting Seth behind her, although at times it becomes clear that she still has feelings for him. This inevitably causes problems for her relationship with Zach, who suspected they still held feelings for each other. This is further complicated when Summer also becomes professionally involved with Seth and Zach as they develop their comic book, "Atomic County", for publication. This relationship proves inextricably linked with the personal feelings all have for each other, and resulted in a bad meeting with a media executive that effectively killed their partnership.