Lilis hopes certification will offer a way forward, but the system moves slower than her need to survive.

Six years after an office elevator accident that claimed many lives, PT Jamsa Land is terrorized again. Linda, the company's public relations staff, is trapped in the elevator and forced to face a mysterious voice from the intercom. Her child is taken hostage, and Linda has no choice but to participate in a dangerous game that slowly reveals the dark secrets of the tragedy six years ago.