On the verge of graduating from art school, Kim Hyunsoo ends up missing the nude croquis exam and receives an F from his professor, Song Yoojin. Faced with a delayed graduation due to the F grade, Hyunsoo visits the professor, pleads with her, and is barely given a chance to take the exam alone. However, since there is no model available, Song Yoojin steps in as the model herself...