Super Power Island is the 5th island on Poptropica, featuring villains mutated by a meteor. They now have super powers and are wrecking havoc on the city, and it's your job to stop them before it's too late!
When a meteor crashed into the side of County Prison, 6 super-powered villains escape and wreck havoc all over the island. You are the island's new superhero since the old one is retired. So, you must stop them to save Poptropica.
It is the first island to have more than one villain.
The flying girl on the poster on Main Street wearing a costume similar to that of Superman may be a reference to Supergirl, the DC comic character.
The picture of the green superhero with the shield in the Comic Shop is a reference to Green Lantern from DC comics.