Kim Kyung-ho

These days, as variety shows are gradually disappearing, this is one of Korea’s representative variety shows that has been responsible for Sunday evenings for over 10 years. This program features numerous stars and members going around various places, playing games, and completing missions. In particular, among the many fun elements of variety shows, this one focuses solely on laughter. Open your eyes! Big fun is coming in! Open your mouth! Big laughter is coming in! Open your heart! Useful lessons are coming in!

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.