Will Stronghold is the son of two of the world's most well-known superheroes, but he doesn't have any powers of his own and he keeps this a secret from his family. When he arrives at Sky High, a high school made especially for teenagers with superpowers, he develops a crush on a girl named Gwen. Will soon learns that Gwen is more of a villain than a hero and it's up to him to stop her from destroying the school.