“You want to eat it too? Married woman! I’ll tell you everything.” Sang-Hyeon, a lecturer at an academy at Mosolada. One day, the sound of a moan heard in an empty lecture room, Sanghyun discovers the scene of star instructor Junbeom’s secret attack on a married woman. In exchange for keeping her secret, she listens to a special lecture on the white-haired Baekjung married woman master… .