Kevin is a young witch who can bring his drawings to life. When a demon learns of his powers, he turns to Kevin, looking to turn into an evil Supervillain in order to kill a retiring Elder before he names a replacement. However, before the demon gets his hands on the young witch, he works his magic on the Charmed Ones and turns them into Superheroes. With all the superpowers raining down upon San Francisco, Piper, Phoebe, and Paige have their work cut out for them after being tasked to protect the retiring Elder.