Years after the defeat of Leader X, the alien returns to Earth to exact his revenge on the planet. To that end, Leader X abducts a young girl and mutates her into the adult supervillain, Gel Sadra, to be the leader of the revived Galactor. In response, the Science Ninja Team is reactivated to fight them, eventually including the supposedly late Condor Joe rejoining the team. Now with new vehicles and weapons, the superheroes face to the renewed menace determined to bring it to justice.
