Kyung Min, a law student, is in desperate straits, so he decides to take it upon himself to help Hye Ryun's poor friend, Jung Eun. This is the beginning of an extremely volatile friendship that somehow ends with the two of them living together under one roof, or to be more specific, living in a room on top of the roof of an old building. Kyung Min's bratty ways clashes with Jung Eun's simple living, as he steadily takes advantage of her kindness and good nature.
as Nam Jung-eun
as Lee Kyung-min / Kevin Lee
as Na Hye-ryun
as Yoo Dong-joon
as Nam Jung-woo, Jung-eun's younger brother
as Nam Sang-sik, Jung-eun's father
as Yong Joon [Kyung Min's college friend]
as Kim Soon-deok, Jung-eun's mother
as Lee Pil-deuk, Kyung-min's grandfather
as Lee Kyung-hee, Kyung-min's grandmother
as Hye-ryun's mother
as Joon-ho, Kyung-min's college friend
