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.
Adieu Galaxy Express 999: Despite the destruction of the mechanization homeworld Andromeda, the machine empire is still swept across the galaxy and Earth has become a battleground.
Amid all this, Tetsurou finds himself confronted by the mysterious black knight Faust and soon discovers the machine empire’s darkest secret.