A medical accident six years ago completely changed the trajectory of Lu Yuan's life. He studied for a postgraduate degree in obstetrics and gynecology just to come back and find out the truth about the accident. He deliberately concealed his academic qualifications, joined the accident hospital, deliberately approached the director's daughter, and secretly investigated various inside stories of the hospital. During this period, she met her first love in college, Wang Siyang. After all kinds of twists and turns, with the help of Wang Siyang, Lu Yuan finally knew the truth of the accident. When the ugliness was revealed, Lu Yuan fell into a painful dilemma between revenge and forgiveness.