Eleven-year-old Erin thinks she has outgrown her cabinmates at an all-girls' camp, but when she joins in some forbidden activities of the older girls in cabin nine, she learns a lesson about who her friends really are.
Even though Megan loves tennis and is good enough to get into the Girls' Summer Camp Invitational Tennis Tournament, she hates being yelled at everyday by the coach and she also hates missing out on fun with her friends from Cabin Six.