Young mecha pilot Tetsuo survives the last great battle against an alien horde. His escape pod lands on Earth eight years later, but his homecoming is not what he expected!

In the year 2025, huge beasts from beyond the galaxy attacked Earth. In the war that followed, humanity fought back with a giant robot named Yukio, piloted by Tetsuo Yabusame, As the massive alien swarm closed in on humanity’s homeworld, Tetsuo and the Earth Defense Force deployed for the final battle with the invading horde. They lost…

The vast power source found within Yukio’s final form gives humanity a glimmer of hope toward securing Earth’s safety. But on their way to a new village, Tetsuo and Yukio encounter a giant robot. What’s more, the robot looks exactly like Yukio, but with black hardware! Will this new robot prove to be friend or foe? And Earth’s icy battle heats up as the kaiju’s strongest smashes its way towards Tetsuo’s crew from belowground!