The people working there refuse to answer her questions about why she was taken away, and is given "medication" drugs.

If she refuses to take them or fight back, she finds that they will physically harm her in response.

While pretending to be okay with everything terrible that is done to her, Soo-Ah begins to secretly write down in detail all of the horrific acts that take place at the psychiatric hospital in a journal she finds.

He is assigned to a project to discover what really happened to the psychiatric hospital, which recently burned down in a fire.

The film was number-one on its opening weekend in South Korea with US$2.3 million.