Celebrity guests are split into two teams to compete in various contests. One guest, known only to himself, is designated the "X-Man", and does his best to cause his team to lose the contests. At the end, all guests try to determine the X-Man's identity.

Baram, Seung-hyun, Sang-jin and Sun-woo are all members of the same club. Baram, a girl with tomboyish looks and a husky voice, is a waitress by day and rocker by night. Seung-hyun is a rich boy whose attraction to Baram leads him to begin a part-time job at the bar she works in. Sang-jin, who also has feelings for Baram, must work seven days a week in order to support his sole family member, Sang-hee. Sang-jin's dream is to escape from poverty and drive a sports car by the seaside with a college girlfriend in the passenger seat. He finds solace meeting Baram at the top of the building where they both work. Sun-woo is a top -flight graduate of a first-class university. He believes the best thing in life is power. Failure is not an issue in his life until he fails the national exam. In turn, he indulges himself in a sexual relationship with under-aged runaway Sang-hee, the younger sister of Sang-jin.

First story. Ye-jin is a high school junior from a wealthy family who also does very well in school. But her secret aspiration is to be a back dancer. Although her boyfriend Sang-rok is the class president and a good student, he is very passive. Ye-jin gives up her dreams of back dancing and decides to leave for Canada. Before she does, she gives Sang-rok a farewell kiss. Jun-tae is a problem student with a heart of gold. He quits school for good after he gets into a fight with the Dae-gon the top student at school. Second story. Jun-tae becomes a street kid hustling customers for a local bar. He develops a crush on a fellow street kid named Gigi. Jong-su, born poor and illegitimate, carries a giant chip on his shoulder. He is part of a motorcycle gang and is going out with Titi who works at the local gas station. The two couples take off to the East Sea for a getaway but are tracked down by men sent by Jong-su's father.