When ordinary boy Marvin wears his super-suit he becomes MARV. A superhero with infinite powers . . .Marvin and his friend Joe are at the brand-new super-spectacular waterpark - WAVE WORLD! But despite the excitement, Marv''s reluctant to get in the water. Although Marv can swim, sometimes he gets struck by a fear of the water that he calls ''The Panic''. Marv uses excuse after excuse to stay out of the pool. Then someone shouts ''SHARK!'' Shark!? It looks like a supervillain is up to mischief again. It''s time for Marvin to become MARV. But, even as a hero, overcoming his fear of the water is going to be a challenge. Can Marv defeat supervillain Shadow and her army of robot sharks to save the day?