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.
Seo Dong-kyu
as Choi Cheol-hwan
홍경인
as Han Min
Han Ah-yoon
as Ban Woo-hee
Kim Min-dong
as Yoo Eun-goo
