Anesthesiologist Agnia Smolskaya was looking forward to a long-awaited vacation on the Mediterranean Sea in the company of her beloved man. But the head doctor did not let Oleg go on vacation! What to do: go alone or refuse the trip? Agnia chose the third option and agreed to the proposal of the head of the medical investigation department. So, instead of a hotel on the coast, she ended up in the Svetlogorsk hospital, which had long had a bad reputation: patients disappeared from there without a trace. Agnia, who got a job as a nurse in Svetlogorka, tried to inspire the trust of the local staff, secretly looked at some documents and realized that staying in this hospital could really be deadly for both the patients and herself...