This drama is adapted from the manga of the same name. It tells the story of Suzuki Aoba (Keito Kimura), a first-year high school student who has embarked on a dark path. Although he is occasionally beaten black and blue in the so-called "fighting game" by his classmate Iwase Sannosuke (Shin Hasegawa), he still lives a satisfying school life. One day, Akasawa Kenshin (Tsubaki Yasuga), a superstar in the martial arts world of the next class, rescued him from the "fighting game". Kenshin suddenly said to him, "You are an empty..." Unable to forgive him, he declared, "I want to punch him." With the introduction of Iwase Sannosuke, Aoba entered the Shark Gym, which was on the verge of bankruptcy and was run by Tokiwa Kansei (Gaku Sano), and entered the world of "MMA" ! Under the guidance of his master, Amachi Wataru (Masaru Kasamatsu), he aims to reach the top of the "MMA Koshien" to determine the strongest high school student fighter. The dark protagonist challenges mixed martial arts, and an unprecedented sports youth story begins!