A Japanese bestseller that has won prestigious awards in the thriller genre.
A twisted thriller reminiscent of “Squid Game” and “Survival Game.”
A heavy atmosphere of a closed bunker, where it isn’t time that’s at stake, but lives.
Former classmates decide to explore a mysterious bunker, not realizing that for some this journey will be the last…
At a class reunion held at a remote villa, the group heads to a mysterious bunker. Before they manage to return before dark, they end up spending the night in the underground facility. However, their peace is disturbed by a strange family lost in the woods.
In the morning, an earthquake happens, and the exit is blocked by a huge boulder. While everyone searches for tools to escape, a murder is committed…
The only way to survive is to clear a passage using a chain and a winch. But that means that one of them will have to stay forever. The perfect candidate is the murderer.
They have one week to reveal the criminal’s identity and sacrifice them. Meanwhile, water from the lower floors rises faster and faster, shrinking their chances of rescue…