Sim Chung-Yi has an absolute sense of sight which allows her to identify thousands of colors. She also has a bright personality. Sim Chung-Yi meets Ma Poong-Do who is a pianist. He is highly skilled on the piano, but he receives criticism that he has lack of sensibility. Sim Chung-Yi and Ma Poong-Do develop romantically. Sim Chung-Yi also tries to find a secret of her father.

Lee Jae-In possesses a good appearance, he is smart and comes from a wealthy family, but he is also arrogant. His grandfather orders Jae-In to enter into a 10 month contract engagement with a female school teacher that he has never met in his life. Lee Jae-In slowly falls in love with her.