Provincial Kate, striving for prospects, leaves her hometown and goes to the metropolis, where she enters the university. However, the girl’s parents cannot pay the tuition fees, and the heroine has to earn money on her own. She often moonlighting after lectures. Looking after other children does not bother the student at all, and she happily brings up the little ones. On the eve of the summer holidays she meets a solid man. The stranger offers Kate earnings for the whole summer. By agreeing, the girl moves to the employer. The mansion of the employer impresses the provincial with its luxury. The girl does not understand why such a wealthy man did not apply to a specialized agency, but hired her as a nurse. Soon the young lady meets the offspring of a rich man. Children are weird, they are pale and scared of something. While spending the night in the guest room, the girl hears an incomprehensible rustling sounding out of the walls. In the morning she decides to talk about this with the pupils. But kids, having heard about the night sounds, fall into a panic stupor.