When the six people are kidnapped and open their eyes, they are tied up in circular chains and cannot move. They are trapped in a structure where they cannot see each other, and try to escape, but they distrust each other because they cannot see who they are.

Genres

Cast

Seo Dong-kyu

Choi Cheol-hwan

Hong Kyung-in

Han Min

Han Ah-yoon

Ban Woo-hee