Big Shadow orders Hakaider to assassinate the chairwoman of an environmental organization, but Hakaider is obsessed with exterminating 01. Kidnapping Akira to lure Ichiro out for a re-match, Hakaider is severely disciplined by Big Shadow. Enraged, Hakaider goes berserk and challenges the Kikaider Brothers to a duel to the death. Can Hakaider defeat them both?