Young Mari is beginning to discover the masochistic side hidden within herself. She feels pleasure in being tormented, cornered, and verbally degraded, her expressions clearly overflowing with delight. She enjoys playing with dominant men who exhibit strong sadistic tendencies, indulging in activities such as pussy stretching, anal pearl insertion, and spanking. Seeking a special excitement different from what she experiences with her husband, her heart is gradually drawn deeper into the world of sadomasochism.