Mark Taylor, aka Dynamic Boy, and his superhero family are under threat from an evil techno-genius. The Silver Cyborg's got a devious new plan - he's going to trap them in the world of Dynamic Boy's mind! How will their superpowers save them from the dangers of Mark's imagination? And will Mark ever survive the embarrassment of his family seeing his deepest, most secret wishes? It could be his biggest challenge ever . . . Illustrated throughout with hilarious pictures by Arthur Hamer.