The Sleepover Friends are camping out with their class at a local park, planting trees, picking up litter, and caring for orphaned animals. It's a whole new experience-and so is sharing a cabin with their peculiar classmate Bitsy Barton! But the friends don't have time to worry about Bitsy, because they're involved in a battle-the girls versus the boys. After their baseball game against obnoxious Wayne Miller and his buddies ends in a tie, he challenges them to a hike around the lake. When the Sleepover Friends get lost, they find they've got a lot to learn-about camping, and about Bitsy.