When Greg Heffley's dad threatens to send him to military school if he doesn't stay out of trouble, Greg finds all-new ways to land himself in the doghouse! For starters, Greg's in over his head when he pretends to work at the swanky country club where Rowley's family has a membership. Things don't go much better on a father-son camping trip with the Wilderness Explorers, and then there's the Heffley's new dog, Sweetie, who fetches even more trouble...

Young Stanley Yelnats finds himself at Camp Green Lake, where digging a hole a day keeps the warden at bay and "builds character". An ancient family curse still dogs Stanley and he's thrown headlong into the adventure of his life. Stanley and his campmates will have to forge fast friendships to unearth the mystery of what's really going on in the desert.