More than a shard stuck in his head, Mark Lukasz suffers from the emotional pain caused by a car accident in which he was the one responsible—because his wife and unborn child died. Mark finds hope to get back to life when he learns about a psychiatric experiment that could free him from unbearable, tormenting memories. But after his first visit to the clinic, something horribly strange happens to him: the contact list in his phone is empty. Mark’s apartment key no longer fits the lock. A sign on the door bears someone else’s name. And when, after his call, the door opens from inside, Mark finds himself in his worst nightmare…