Josh, Alex, Campbell and Gretel discover the secret lair of the Silver Shadow: a long-forgotten superhero from the 1950's. Meanwhile, the Silver Shadow's arch enemy, the Crab, has started training his granddaughter, Fiona, to take over the family business.

When the Silver Shadow sends his team on their first mission - to bust a bicycle theft ring - they find that fighting even petty crime can be harder than it sounds.

Alex is seen with Josh after school, and to prevent suspicion invents a story that they are going out - much to Josh's dismay! Meanwhile, Fiona goes on a recruiting drive for evil henchmen, and tries to steal an ancient helmet.

A series of public transport robberies leads the Silver Shadow team to a confrontation with Crab Girl. But, with the team more focused on competing with each other than fighting crime, their superhero careers may come to an untimely end.

Campbell borrows the Silver Shadow's exoskeleton as protection from the school bully at camp. When a thief steals the high-powered suit and embarks on a crime rampage, Campbell has a lot of explaining to do.

The Crab believes the Silver Shadow is a student at Bateswood High School, and Fiona enrolls at the school there to lure him out. But is even achieving world domination worth the pain of posing as Alex's friend and organizing the school dance?