Swimming, Basketball, Archery, King Jelly Jam sports camp has it all. Too bad Wendy isn't a sports freak like her brother, Eliot, but how excited can you get over a game of softball? It's just a game, right? Wrong. Because Camp Jelly Jam is no ordinary sports camp and Wendy's about to find out why. Why the counselors seem a little to happy, a little too obsessed with winning and why the ground is always rumbling late at night.