It's an exciting day for Marvin and his classmates because they are visiting the Natural History Museum. Marvin and Joe can't wait to see all those dinosaur skeletons up close, but they get more than they bargained for when supervillain Leo turns up and brings the Dino skeletons to life! With the help of his loyal sidekick, a super-intelligent robot called Pixel, it's time for Marvin to become superhero Marv.Marv must use all of his newfound superhero skills if he wants to stop Leo and save his classmates from the gang of marauding dino skeletons running riot!