After nearly being driven to extinction, the last of the human population band together to build a mobile fortress and mount their resistance against the Gadoll.
EPISODE 1
Ignition
Unlike most Tankers, Natsume dreams of joining the battle against the Gadoll. Now that she must leave the orphanage and find a job, Natsume hopes to accomplish her dream.
EPISODE 2
Sprocket
Kaburagi, Natsume, and the other Tankers deal with the aftermath of the battle against the Gadoll; Kaburagi comes to a crossroads as he reflects on his past.
EPISODE 3
Steering
Kaburagi finds out more about Natsume's past, while Natsume starts training to fight the Gadoll in hopes of joining The Power.
EPISODE 4
Transmission
Natsume enters battle with the Gadoll for the first time to save Pipe, and the Tankers notice; Kaburagi reaches a crossroads with a potential career advancement.
EPISODE 5
Differential Gear
Natsume marches into battle with Squad 6 to defeat Gadoll alpha; Kaburagi must confront a decision he thought he'd avoided.
EPISODE 6
Radiator
Kaburagi is captured and sent to a correctional facility for defective cyborgs, leaving Natsume to look after Pipe.
Katsuyuki Konishi
Tomori Kusunoki
Kosuke Toriumi
Eri Kitamura
Mei Shibata
Yoshino Aoyama
Eiji Takeuchi
Rikiya Koyama
Yuzuru Tachikawa
Takeshi Kikuchi
Daijo Kudo