Once the kids had completed the Super Hero Training, they created their own Super Hero identities by designing their own capes and disguising themselves with masks. Then the observant Sydney (note it's the girl) notices that The Hulk costume is missing from the Super Hero Hall of Fame. So, our little super heroes donned their costumes and took off to find the evil villan "Diaper Man". They were SOOOO serious about tracking him down and finding the missing costume! Luckily diaper man left a trail of diapers and our Super Heroes were able to work together to defeat him and return the costumes to their rightful places!!!