Tasai, Mitsushima and Ango have gathered at a mahjong parlor, and all 3 guys have the same dream; to find a mistress. It is an eternal taboo for the married, but with their marriages going through a rough patch, they are tempted. Not having a clue how to find a mistress, Mitsushima calls his colleague, Masumi Ibuse, aka "Prof de l'amant." Will the guys complete their missions and find a mistress?