A science-fiction fantasy based loosely on the classical Japanese Noh theatre drama Adachi-ga Hara about the demon Onibaba, of which lyrical extracts are quoted at intermission-like intervals throughout the film. The plot centres on a journey made by a space pilot named Yūkei who arrives at a planet upon which a murderous "witch" is said to reside.
Having gained great popularity as a TV series and toys, Crush Gear Turbo here becomes a movie for the first time. The very first Gear even made in the world is stolen. The gear, named Kaiservern, beats the prize winners of the Australia convention one after another. Kouya and Manganji, which won a prize in the Asia Convention, become targets too. When the unidentied gear fighter who handles Kaiservern appears in front of Kouya and Manganji, the two boys decide to fight together to win victory over their enemy.
Shuichi had a motorcycle accident 4 years ago. Because of the accident, he lost the last year of his memory. One day, at a friend's wedding, Shuichi has a fateful meeting with Yoshimi. They enjoy happy times together and Shuichi thinks about marrying Yoshimi. Then Yoshimi becomes sick. A sad truth is hidden in the lost memory of Shuichi.
