Harry Hammer's all-time hero is the great white shark Gregor the Gnasher. Gregor is a famous action-movie star and the Underwater Wrestling Champion of the World. But not all great whites are like Gregor; most are fierce creatures of the deep. So when Harry sees one near Shark Point, he sounds the alarm and everyone panics! Turns out it's just an old basking shark, and now everyone is furious. After a couple more minnow-sized mistakes, Harry sees a real great white, and it's very hungry. This time, will anyone believe him?