School is out and summer break is finally here! For Aria Jacobs this is all her puzzle pieces falling into place, she's stoked because she finally gets to work at her old summer camp as a counselor. Orientation comes and she's disgusted to find her ex, Robbie, is also a counselor this summer. With a camper's gorgeous older brother checking in often and Robbie trying desperately to regain Aria's love will Aria manage to even make it through the summer? Who will she seek refuge in? And what could one water balloon hurt? This, dear campers, is the battle of the exes.