Azuma Tokushi, the top of the East-West Professional Mahjong Association, hopes that his daughter, Akemi, will take over his position. However, Akemi spends her days earning a little money playing amateurs and giving it to a man.

Mai, a university student, has an incredible memory due to an illness she suffered as a child. Her boyfriend Minoru, who noticed Mai's ability to remember everything in an instant, persuades her to use her special ability to play mahjong. Mai is reluctant, but she learns that Minoru has been losing a lot of money at mahjong and is in debt to a man named Akaboshi. Akaboshi sees Mai's ability and suggests that they make some money together.

An erotic drama starring Ai Kishi, a popular sexy actress who is sought after in magazine gravure. Chidori, who worked at the Sparrow Villa but did not know mahjong, did not touch the tiles and worked as a chore.