Set in the neurosurgical ward of Copenhagen's Rigshospitalet, the city and country's main hospital, nicknamed "Riget", "Riget" means "the realm" or "the kingdom" and leads one to think of "dødsriget", the realm of the dead.

Martin, a law student, takes up a job as a nightwatchman at a mortuary to fund his studies. But the mortuary harbours a dark secret, and he has to find the truth before he is implicated in a serial murder case.