
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