Expect bugs, well-read dinosaurs, and lots of goo! The Super Sidekicks just saved the world! And now they've been invited to join HERO: The Heroic Earth Righteousness Organization. It's the most exclusive club for the planet's most famous superheroes. (No big deal!) But before they can become members, they must pass the hardest challenge in the universe-a test so scary only the truly heroic can survive.