A 7-day (168-hour) mahjong champion deciding match with a prize of 100 million yen. Four fierce men gathered at the site of the decisive battle of this unprecedented tournament. Akimitsu Uehara (age 58), representative of the Japan Mahjong Federation, which reigns at the top of the professional mahjong world. Kyoka Futaki (24 years old), the female sparrow player representative who stands at the top of the 200-odd female sparrow players nationwide. Jiro Okita (19 years old), representative of the Japan Professional Mahjong Joint Association, also known as “Okita Souji of the Professional Mahjong World”. And Yugo Kijima (36 years old), the representative of “Japan Mahjong Union”. While facing each other’s past and fate, challenge the “Battle of the Century” to fight against the limits of your physical strength and intelligence!