Build a movie plot around this: At the dance party, Gwen reveals what? She is actually Royal Pain.
The answer to this question is:
Will Stronghold begins ninth grade at Sky High, a high school that exclusively teaches teenagers with superpowers. Will's parents are The Commander and Jetstream, some of the world's most famous superheroes. Will's best friend, Layla, who happens to have a crush on him, has the power to manipulate plant life. Will is anxious about attending Sky High, located on a floating campus reached by a flying school bus, because, unbeknownst to his parents, he has not developed any super powers. On the first day, he and the other ninth graders are harassed by a trio of bullies: Speed, a burly senior with super speed, Lash, a skinny senior with extreme flexibility, and Penny, a senior cheerleader who can clone herself. Because of his lack of powers, Will is slated to enter a curriculum for "Hero Support" and becomes a sidekick. His classmates include Ethan, who melts into a fluid; Zach, who glows in the dark; Magenta, who transforms into a guinea pig; and Layla, who joins the class in protest against the two-track nature of the school's education system. The class is taught by The Commander's former sidekick, "All American Boy."The Commander is unaware that his son has been relegated to Hero Support, and shows Will his hidden trophy room. He is particularly proud of the mysterious weapon, "The Pacifier", which he took from his science-themed nemesis, Royal Pain, years ago. Unknown to either of them, Royal Pain, who had been presumed dead, watches the exchange from a hidden camera in one of the other trophies. As Will settles in to Sky High and makes friends with the other sidekicks, he comes into conflict with pyrokinetic student, Warren Peace, whose supervillain father had been imprisoned by The Commander. During a fight between the two, Will demonstrates super strength, impressing Gwen Grayson, a beautiful and popular "technopath" who controls machines with her mind. Will begins spending more time with Gwen and her clique of friends, ignoring the sidekicks and Layla, who reveals to Warren that she has loved Will for a...