The restricted areas, where only permitted people can access them, are considered mysteries because outsiders can't comprehend what is happening in that place. So, three celebrities volunteer to access the area, uncovering many stories hidden in the walls and demystifying the 'restricted.'
- Other name:
- Genre: Documentary, Reality Show
- Status: Ongoing
- Duration: N/A min
- Country: South Korea
- Network: N/A
Cast:
