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. Who is the mysterious Colonel Sagami, leader of the band of kaiju tamers who call themselves the Light of E-RDE? What role did he have during the final battle against the intergalactic kaiju? These questions linger over the struggle for Mishima Mall as Tetsuo and his newfound friends fight to protect their home. The answers to those questions may reveal uncomfortable truths about the kaiju invasion of Earth, and a connection between the Colonel and Tetsuo.