When her teacher assigns a new team project for Earth Day, Ellie can't wait to pair up with her best friend, Hannah. After all, as a superhero, it's Ellie's job to save stuff--including the planet! But the project soon becomes more than Ellie's super-skills can handle. She decides to use one of her parents' super inventions to create a copy of herself. But when Ellie #2 threatens to take over, it's up to the real Ellie to bring the project back down to earth.