In a future where Metal Fight games have become the world's most popular televised sport, numerous robot contestants battle for the title of Best Metal Fighter in the World. Kurenai Ken, together with teammate Saeba Shoko—who was initially hesitant—pilots the Super Robot Fighter, Red Baron, and enters the competition with the goal of becoming its champion. However, Ken must face a host of rivals from across the globe, including Kaizer, the Tetsumen Tou (meaning "Iron Fist," a nod to the original Red Baron TV series) doctors, Tiger, and ShinRon.