In a world so similar to our modern reality, a terrible thing happens: scientists, trying to create a “perfect soldier”, having vaccinated a person with the abilities of a vampire, make a mistake. And very scarce, until now, the population of vampires gets unprecedented growth and new opportunities. The efforts of hunters to protect humanity are joined by hired killers, who now take orders for evil spirits. One of them, a mercenary who received the nickname “Lady” in mockery of the principle and fanaticism, is approached by a vampire, with an unexpected request to take him as a student. He says he wants to return to the human world. Intrigued by the audacity, she agrees. The already difficult relationship between the master and the student is clouded by suspicion: it turns out that behind the unusual toothed there is a pack of vampires who dream of establishing a new order in the city. The lady has to survive, deal with enemies, and at the same time find out whether her student is sincere in his intentions.