After stowing away on Big One, Manabu and Mamoru watch in horror as their father makes the ultimate sacrifice to rescue a stranded space-train under attack by an enemy Destroyer.

Manabu joins the SDF against his mother’s wishes. On his way to headquarters, his space-train falls into a Time-Knot, bringing Manabu face-to-face with a ghost from his past.

Manabu is assigned to his father’s old platoon, but his welcome is anything but warm. He must survive both a life and death crisis and senior officer Bruce’s dangerous and difficult training.

A missing person report leads Sirius Platoon to investigate the Ghost Train known as Eternity. Impulsively, Manabu jumps aboard the massive specter, but will he ever be able to disembark?

Sirius Platoon’s investigation on Planet Leo Glando goes horribly wrong when Big One is stolen! Unwilling to let the train fall into enemy hands, Captain Bulge is ordered to destroy it.

A passenger train encounters a mysterious glowing sludge shortly before exploding. Manabu arrives to investigate, but the true horror lies in wait. Will he be able to separate emotion from duty?