Ava, a 20-year-old woman, awakens in a strange, abandoned apartment with no memory of how she got there. A voicemail in her own voice warns her that this has happened before and that, whatever she does, she must never look under the bed.

As midnight approaches, cryptic messages, disturbing reflections, and fragments of childhood memories begin to reveal a terrifying truth. The monster Ava feared as a little girl was real, and it has never let her go. Trapped in an endless cycle of forgotten memories, Ava encounters her seven-year-old self, who has been imprisoned beneath the bed for years.

Desperate to escape, Ava must decide whether to confront the creature and break the cycle or continue reliving the same nightmare forever. But when she finally discovers what lies underneath, she faces a chilling realization: some childhood fears never die, and some nightmares are impossible to escape.