It is 35 years later from the battle of Brave Raideen and the Demon Empire, and battles of Combattler V, Voltes V, and Daimos. The peaceful city where the battle of super robots was forgotten was disturbed by two Gante, the giant stone demons which appeared suddenly. Akira Saezuri, an eighth-grader girl heard mysterious voice and became new pilot of Reideen.

She revivies Akira Hibiki sealed for 35 years, and fights with Combattler V, Voltes V, and Daimos against; Mari Sakurano possessed by Barao, Prince Sharkin, Great General Garuda, Prince Heinel and Richter. However at the middle of a fight, Prince Sharkin find Akira Saezuri was daughter of his dearest younger brother.