Lee Sang-mi

Nonstop is a South Korean slice-of-life sitcom that broadcast its first season in 2000 on MBC. It continued with 5 more seasons. The series was popular for its cast of teen idols, many who debuted through the show..

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.