Cho Hwan-yun , a naive college student. He spent a lot of time in the library rather than hanging out with friends like other students.Hwan-yun prefers alone because he was shy and did not like the attention of the public against him. He thought that he was like a ghost among college students .This is because there seems to ignore his presence. But he did not realize that he has stolen the hearts of the popular group of male students at the college. And they are not typical students because they came from a wealthy and powerful family. They are favored by girls because of their good looks and charisma.