When Mark Grayson finally inherits powers from his superhero father, it’s a dream come true. But there’s more to being a hero than just choosing a name and costume.

With his father out of action, Mark struggles to defend the city against an interdimensional invasion, joining forces with a team of teenage superheroes.

Mark has to cut a study date short to help save Mount Rushmore from a crazed scientist. Robot deals with Action - Comic as he assembles a new team of world-saving superheroes.

It's two firsts for Mark: a first date and a first trip to another planet. At the same time, Nolan and Debbie revisit their own first vacation together.

Feeling confident in his new abilities, Mark risks a team-up with a local villain to take down a crime lord, while simultaneously juggling school and a new relationship.

Mark joins William and Amber on a campus visit to Upstate University, hoping to discover a new future for himself. Debbie makes her own disturbing discovery.

Mark must prove he's become the hero he's always wanted to be by stopping an unstoppable force.