The Ultimate Force Zero (Ultraman Zero, Glenfire and Mirror Knight) come to the rescue when Princess Emerana and her protector Jean-Bot are captured by the mysterious Beatstar. Vowing to destroy all organic life, Beatstar sends the deadly robot Jean-Killer to crush his foes.

When Jean-Bot turns against Princess Emerana, a direct link between the robot and Jean-Killer is revealed. Emerana tries to use that knowledge to aid the Ultimate Force Zero in their fight to stop Beatstar before he crashes his artificial planet into an inhabited world.