Respectable businessman Sapsanov is worried about his daughter Ksenia - someone is clearly watching her. To protect the girl, he hires a bodyguard, Evgenia Okhotnikova. It would seem like a common thing. But... It turns out that Ksyusha is not allowed to communicate with her mother, her diary is full of gloomy drawings and sad poems, and everyone, from servants to colleagues, is afraid of Sapsanov. To top it all off, on Okhotnikova’s very first day of work, Ksenia is kidnapped!