A person ends up in a maximum security isolation unit. He does not remember what happened or what actions led him to prison. In the cell, he meets a prisoner who agrees to help him restore the chain of events. One day, his cellmate disappears without a trace. The prisoner tries to establish contact with the warden and find out what happened. Will he be able to get to the truth? The search for answers is hampered by the strict regime of the isolation ward and the lack of communication with the outside world.