A chance meeting in a nightclub completely changes Vlada's life. The girl learns that her usual reality has its own underside. That there are transitions between worlds, into which various entities constantly penetrate, and among ordinary people werewolves and vampires live. Lada becomes involved in the activities of the secret organization Alliance of Guardians. Guarding people and preventing crime is not an easy task, but it becomes even more difficult and dangerous when it comes to protecting against creatures that people do not even know exist. But is everything so simple? And how random are all the events and meetings in the girl's life?