It's hard to realize that people close to you are not the same people they were for many years. That life around is not the same as you are used to seeing it. The life of a girl with the strange name Tekla changes in a matter of seconds when she is faced with the world from which her mother tried to protect her. The girl learns that she has certain abilities and can protect the inhabitants of St. Petersburg from evil. But her coach and boss turns out to be a rude and reserved man. There is a certain connection between them, more than the usual between warriors fighting evil. But they don't want to admit it. Will they be able to maintain only a working relationship or will the thread connecting them become stronger and weave into a ball?