As a young man, Leon Nader suffered from insomnia. As a sleepwalker, he even turned to violence during his nocturnal excursions and had psychiatric treatment for his condition. Eventually, he was convinced he had been cured --- but one day, years later, Leon's wife disappears from their apartment under mysterious circumstances. Could it be that his illness has broken out again? In order to find out how he behaves in his sleep, Leon fits a movement-activated camera to his forehead --- and when he looks at the video the next morning, he makes a discovery that bursts the borders of his imagination. His nocturnal personality goes through a door that is totally unknown to him and descends into the darkness.

The renowned criminal psychologist Ira Samin prepared her suicide thoroughly. The death of her eldest daughter had weighed too heavily on her conscience for her to carry on and she yearned for one last drink to raise a toast to oblivion. Her morbid plans are interrupted, and she is called in to negotiate a gruesome hostage situation at a radio station where a psychopath is playing a morbid game.