Thirty years ago, the alien fungus "Geddes" ravaged the earth, merging flesh and scrap iron to create semi-mechanical monsters, and humans retreated to the dome city. Jack, the wilderness garbageman, accidentally dug out the [Plasma Triangular Core] and awakened the M78 Nebula defender "Gray" who was sleeping in it. In order to survive, the two were forced to coexist. Jack put on a white nano-armor and struggled to open up wasteland in the dangerous wilderness.
With the resurgence of the fungal mother body, the end has come again. When the defense line collapsed, Gray left a final warning: Although 100% resonance can transform into a giant of light, the price is to burn out his life. Facing the huge monster in front of him, Jack decided to risk everything and fight side by side with Gray.
"Mr. Alien, today... Let's play something big together!"
