The thrilling MMA conquest of a rookie genius fighterWheesung, who was a promising sportsman with a natural sense ofmovement, quit exercising in high school due to an injury and lives a part-time life.In the meantime, he is invited to the match of MMA amateur Junghwan He feels a strong thrill at the power of Octagon’ that he encounters for the first time.22-year-old Hwi-sung Lee, who was busy running away after giving up on everything.The moment he climbs into the Octagon, a spectacular flight that no one expected begins.