Shiina wakes up in a vast library suspended between worlds, surrounded by towering shelves and an ominous clock counting toward an unknown thirteenth hour. She's not alone: nine men appear alongside her, each harboring their own secrets and skills. None of them remember how they arrived or why they're trapped here together. The library itself becomes both sanctuary and prison. Ancient texts scattered across endless corridors hold cryptic clues to their escape, but deciphering them requires more than intelligence. The group must learn to trust each other despite conflicting personalities and hidden agendas. Every puzzle solved brings them closer to freedom, yet every answer raises harder questions about why they were chosen and what waits beyond the clock's final strike. Time pressure mounts as the clock inches forward. Shiina finds herself at the center of something larger than a simple escape room, caught between the men's competing loyalties and her own growing suspicions about the library's true purpose. Survival means solving impossible riddles before the clock runs out.