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.

Mark answers the call to save an alien species, but the mission has unexpected personal consequences.

The Grayson household is upended when Mark returns to Earth with surprising new responsibilities. The Guardians of the Globe face dangers both at home and away.