From the introduction:
Drama set in the world of modern martial arts.
In the year 2017 everything is showbiz, even sports. UFC (the ultimate fighting championship) has changed from the bloody cockfights in the 90s to a mainstream sport that carries a lot of prestige and money around. New stars rise, burn brightly for a while in the knowledge of the whole world, and then vanish when their winning streak ends. Through this, MMA (mixed martial arts) is the new trend in martial arts and its cornerstones: brazilian jujutsu, thai/kickboxing, wrestling, judo and boxing are flooded with new practitioners.