Just returned to her teaching duties after maternity leave, married woman and teacher Rie Asagiri is warmly welcomed back by her students, appearing cheerful and energetic in class. However, she is undergoing a significant change—after giving birth, her breasts have become engorged with milk. One day, while changing her breast pads inside her competitive swimsuit in the locker room, she is unexpectedly spotted by a male colleague. This incident quickly spreads among the male staff, and their gaze toward Rie gradually shifts from respect to lustful desire.