The story imagines if Japanese historical figures such as Queen Himiko, the warlord Oda Nobunaga, and samurai Sakamoto Ryouma were cats. (Source: ANN)

Despite the destruction of the mechanization home world Andromeda, the machine empire is still swept across the galaxy and Earth has become a battleground. Having returned from his journey aboard the train Galaxy Express 999, Tetsurou Hoshino joins the resistance and fights alongside others who have retained their humanity. When the 999 returns to Earth, Tetsurou receives an enigmatic recorded message from his former traveling companion Maetel, telling him to board the train once more. Fighting his way to Megalopolis station, he makes it onto the train just as it departs. This time, however, Tetsurou is met with several mysteries: Maetel is nowhere to be seen, an ominous "Ghost Train" has appeared, and the ultimate destination of the 999 is unknown. Amid all this, Tetsurou finds himself confronted by the mysterious black knight Faust and soon discovers the machine empire's darkest secret.

Sadamitsu, a high-school delinguents turned to a masked-hero, while not dealing with his rocky relationship with the strong female protagonist, he puts on a motorcycle-helmet-like mask and becomes a semi-robotic superhero who fights. He is assisted by other possibly- mechanical creatures in order to save the earth from the invasion of 20,000,000 escaped alien convicts.

Bonus segments of Cinderella Girls Gekijou 3rd Season streamed on The iDOLM@STER Cinderella Girls Mobage following the television broadcast.