In the underground world of illegal mahjong, what does it take to be No. 1? K is a high school student who gets pulled into the dangerous world by a man known as Seki. After winning an epic battle, K has the chance to take the money and leave but he chooses instead to save Amina (Akane of idol girl group ACTRY), a young girl from another country who was treated like a pet/slave. But in order to keep protecting Amina, K is pulled back into the underground mahjong world and must defeat his biggest rival, Dojima, to make it out alive. Earning the nickname “Frozen K” for his prowess at the game, can K win the most important game? ~~ Adapted from the manga “Tohai” (凍牌) by Shinasaka Kouji (志名坂高次).