Toby, Pete, Lorna, and Emily are just average kids-until they stumble upon a Web site that turns them into real heroes. Hero.com allows them to download flying, invisibility, or teleportation abilities, and suddenly, Toby's rivalry with his sister, Lorna, and Pete's trouble with Jake Hunter, the school bully, don't seem so bad! But when the supervillain Doc Tempest kidnaps Toby's and Lorna's mom, will they be able to combine their powers to fight evil and bring their mother home? Of course, little do they know that Villain.net is out there too, recruiting teens for the other side. . . .