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.

Male and female contestants compete for "each other" in romance games. For example guests have to dance in order to impress the person they are after. Contestants are artists, actors, models, comedians, and MCs of the South Korean entertainment industry.

Cha Moo Hyuk is a man who was adopted by an Australian family but treated cruelly and then abandoned at a young age. By chance, he meets Song Eun Chae, a fashion coordinator dedicated to her employer, singer Choi Yune. Their meeting will have implications for the rest of Cha Moo Hyuk's life as a devastating turn of events leads him to delve into his past, and ultimately find happiness.

Kang Hee Sun is a professor at the Hanbaek Medical School who is called in when Jo Hyun Min, the owner of a traditional Korean house, finds a mummy preserved in a small room in the barn which was previously sealed off. The two of them feel a strange sense of recognition at their first meeting, which they put down to instant attraction until the series of bizarre occurrences that followed lead them to suspect that they may actually be deeply connected to the mummy's past. Hee Sun and Hyun Min's investigation reveals the tragic story of a pair of lovers who were torn apart 400 years ago, with a resulting misunderstanding spawning a centuries-long hatred.