Nurse Oksana Berestova decided to spend her vacation in St. Petersburg. Arriving in the city, she discovered that her cousin Sasha, with whom the girl planned to stay, had mysteriously disappeared. Surprisingly, before her disappearance, Sasha did everything possible to look like Berestova. The attackers mistake her for her runaway cousin: first they follow her throughout the city, and then attack her in the elevator... Most likely, Sasha got into some kind of trouble and disappeared. Oksana gets a job at the hospital where her sister worked. Strange things are happening in an expensive and prestigious clinic: during simple operations, patients die under the scalpel of a professional surgeon and a team of doctors. And all this happens in the VIP section, where mere mortals are not allowed to enter.