Quick recap
On a family road trip, the trailer carrying Wendy and her brother Elliot comes unhitched and rolls downhill. They end up at King Jellyjam's Sports Camp, where the motto is "Only the best." The winners vanish the next day. She finds out the counselors are hypnotized and, in a tunnel, finds the missing winners scrubbing King Jellyjam, a giant purple blob who can't stand his own stench and eats anyone who stops cleaning. Wendy tells everyone to lie still on the floor. With no one to clean him, the king chokes on his own smell and melts. Weeks later, a horrible stink scares the siblings, but it's only their mom cooking brussels sprouts.
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