Following the spectacular launch of this new series, Rainbow Fish, Spike, Rosie, and all the other students in Miss Cuttle's undersea classroom return in two new adventures. Rainbow Fish and his friends decide to hold their own impromptu sports day. It sounds like a good idea, but it's soon clear that Spike is a whining sore loser and Puffer is a boasting poor winner. Suddenly, no one is having fun. It's up to Rainbow Fish and Dyna to set a good example...