An art history lecturer, unfairly disgraced by her superior for refusing to certify a suspicious painting, endeavors to set the record straight by exploring the mystery of a 16th-century artist using a diary that may lead her to the genuine painting.
While giving birth, Oh Shin-young falls into a vegetative state induced by her husband's ex-girlfriend who is still in love with him, despite being married to Chae Hyuk-jin; when Hyuk-jin learns of his wife's betrayal, he plans his revenge.