Miai, a mother who worries about her son who moved to Tokyo to attend university and goes to take care of him once a month. However, as he goes to the school many times, his love for his children eventually goes beyond family love and develops into a relationship between a man and a woman. "I can't allow this to happen even though I'm a parent and child, but I can't change the fact that I love him. What should I do..." While suffering from the conflict created by the blood connection, Miai cannot stop her body from aching passionately in search of her son and decides to move to Tokyo again.