Tetsuro believed he was freeing the Earth from the clutches of the Metanoid Empire’s tyranny. Yet one year after his return, Tetsuro is a prisoner of a new tyrant, and this one human! However, before worse than imprisonment can happen to the boy, Maetel and the 999 swoop into the boy’s rescue. With his freedom, gun, and trusty hat returned to him, Tetsuro reaffirms his desire to save his home. But a new darkness is rising to swallow the light, and one of its agents has him in her sights. Before the train can depart for a new destination, Tetsuro will have to face the deadly knight Helmazaria!
Set in an alternative timeline to the manga and animated TV series, the movie features a classic Cinderella story told through the medium of '80s dance. Tsukushi Makino is a trainee dancer in a New York Performance group, struggling to become the star of the show with the help of Rui Hanazawa and Tsukasa Dōmyōji.
Goku and Kuririn are given an assignment by Kame-Sen'nin: "Retrieve the sleeping princess from Lucifer and I will take you as my students." But the mission proves to be more perilous than originally thought.