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!

Ten years later, Tetsuo has returned to Earth in an escape pod, but finds the planet totally frozen over! To his horror, he discovers that the alien kaiju are also on Earth. After meeting a hardy band of human survivors, Tetsuo learns that Yukio has survived as well, his consciousness downloaded into the escape pod—which is also a battle robot! But the people Tetsuo has found are not the only survivors, and a mysterious humanoid kaiju also lurks among the ruins…

Ten years later, Tetsuo has returned to Earth in an escape pod, but finds the planet totally frozen over! To his horror, he discovers that the alien kaiju are also on Earth. After meeting a hardy band of human survivors, Tetsuo learns that Yukio has survived as well, his consciousness downloaded into the escape pod—which is also a battle robo