Hundred years ago, humans left the nuclear-contaminated Earth and settled on a new planet called ‘Tarka’. Nicholas, a low-level contributor who worked at a mining farm, lived hard day by day with his two sons—Logan and Dustin. However, one day, during the long rainy season, as he and other workers took a morning break, the TV in the break room suddenly broadcasted an unbelievable scene: the city had been invaded by the Cordollians! Terrified, the middle-aged man ran several hours home. He slammed the door house. But his two sons were nowhere to be found. Instead, two tall bizarre figures were standing in the dim house. Nicholas met the blazing bright yellow eyes of the figures. He froze. “Oh, my beloved sons have turned into monsters.”