Firehawk Mai entered the global fighting tournament "Top of Fighters," gathering elite warriors from around the world, seeking to defeat the tournament organizer—the man who assassinated her master and her sworn enemy. However, during the competition, a mysterious alien suddenly appears from space, brutally slaughtering the participants one by one. Sensing imminent danger, Mai attempts to flee, but is pursued by an alien wielding optical camouflage, quickly overwhelmed by its superior power. Just as she's cornered, fellow competitor Gonzales appears, seemingly to save her—but driven by his obsession to win, he attacks and knocks her down. Penetrated by both the organic siege machine and the alien's otherworldly strength, Mai succumbs. A desperate battle against inhuman creatures begins now!! [BAD END]