The first installment in the series begins with the male masochist accidentally failing to follow the rules while wearing a chastity device. Mistress Tsuki harshly scolds him for his disobedience and immediately restrains his body. She mercilessly clamps multiple clothespins onto his shaft and balls, then violently yanks them off one by one. The intense pain becomes unbearable, causing slight bleeding from his shaft. Further torments follow, including vigorous slapping and squeezing of his genitals. Overcome with agony, the man sobs uncontrollably, crying, "I won't mess up again! Please forgive me!" But his pleas fall on deaf ears as Mistress Tsuki continues her relentless punishment without mercy.