Larisa Cherkashina is a beautiful girl. She loves to walk along deserted streets at night. But those who like to have fun with easy and tasty prey will be severely disappointed: Larisa works in the department for the suppression of sexual crimes. She already has a lot of rapists, perverts, and sexual psychopaths on her account. But what she and her partner, Captain Fokin, encountered does not go anywhere: the girls are not only raped, but also all their blood is taken from them. It looks like there is a maniacal vampire at work. Larisa and Fokin come up with an intricate operation. As a result, a very strange individual falls into their network: in one person there is a killer, a drug addict, a vampire and... a woman.