Solomon Crocodile and his friend Mortimer are bored. They want to find some fun, but what can they do? Tree-climbing is tricky, chasing lizards doesn't end well and flying turns out to be a lot harder than it looks. But then they spot the biggest hippo in the river. Just imagine the splash he'd make if two naughty crocodiles were to surprise him! But Solomon and Mortimer are about to get a whole lot more than they bargained for.