A middle-aged mother harbors deep affection for her eldest son, regardless of age, and seeks his affection by acting clingy, desiring to turn her feelings into physical intimacy. The days spent having her mature body caressed and satisfied become a source of pleasure for the mother as well. When the younger son discovers the relationship between his mother and older brother, he is overwhelmed by jealousy and unnatural desire, driving him to pursue his mother’s body. As a result, the mother experiences new pleasures at the hands of her younger son.