Five children are tricked into visiting a wonderfully magical island, which quickly becomes a hilarious and unexpected disaster. One small boy can save the day, if only he didn't have a gigantic bubble blowing out of his butt! 10-year-old Leo Wriggly lives with his mum and dad who are Professional Competition Winners. In one particularly lucky week, they win a trip for themselves and a trip for Leo to visit a brand new theme park called Friendly Island. As his parents depart, Leo's Aunt Margo arrives to babysit, but unlike his parents, she is a stickler for fine print and happily sends her nephew to Friendly Island 'where chronically misbehaving children are sent to correct their disgusting habits'. Leo arrives on the island with four other children. At first, it seems like Disneyland, there are dolphin rides and monkey safaris! But there's a catch. Each mealtime, the children are tricked into drinking a potion that transforms them. The girl who chewed her hair has grown a bird's nest on her head. The boy who picked his nose has had his brain fall out. Another child who swore too much can now only squawk like a parrot and another girl who stole money now has hands made of glue. And poor Leo Wriggly, whose only crime was to swallow gum, has MASSIVE pink bubbles coming out of his butt. Can this young boy save his friends before the island's Komodo dragon eats them all for supper?