The Dermatovenerologic Dispensary is the most mysterious of all medical institutions. Those who do not know how to keep their mouth shut do not stay here... Doctor Danilov thought that he had found a quiet job, but very soon he realized that he was mistaken. Syphilis and gonorrhea are curable, stupidity is not. KVD is a place where you must always be on guard. Once you relax, you are gone. But the most interesting thing in the dermatovenerological clinic is not the diagnoses, but the causes of the diseases. This is where a real thriller with elements of comedy begins.