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.

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

In this special prequel episode, Samantha ‘Atom Eve’ Wilkins discovers her superpowers as a young girl - and must come to terms with her own sinister origins as she discovers a family she never knew she had.

An old enemy threatens everything Mark holds dear.