A forbidden romance that crosses the taboo of an affair between teacher and student. Despite being married, the teacher is irresistibly drawn to another woman—his most serious and diligent student, Mao. The rational educator and innocent girl dive into a secret affair, their hidden meetings escalating into an illicit relationship. As reason collapses, their souls tremble with deep tongue kisses. Intense intercourse brings mind-melting pleasure. Late into the night, they crave each other, staying together until morning. One night of forbidden passion that drives the middle-aged teacher to the edge of madness.