The Kyurangers return to Earth to stop Don Armage's plan to destroy the universe, but as Tsurugi's condition worsens, Doctor Anton stands in their way. Anton transforms into his monster form and enchants citizens to attack the Kyurangers

Now possessing Tsurugi's body, Don Armage absorbs Shou and is stronger than ever. Having a plan to rescue both from Don Armage's grasp, the remaining Kyurangers prepare themselves for the final battle.