Jeon Wonwoo is known for his cold and expressionless demeanor. He was famous for being a campus crush and a professor, but he had a side he sides.

Meanwhile, you're a hyper, innocent and sweet student of his. You never knew he liked you, because of your age gap of 20 years.

One day, you broke up with your boyfriend, you were sad till you started class. You all were surprised when the professor came in a good mood.