Eighteen-year-old Vasya Tikhonova spends the summer at a country resort with her parents for treatment in a boarding house near Moscow. The girl has a congenital heart disease, so she is under the careful care of her mother. Simultaneously a murder occurs with the arrival of the Tikhonovs in the boarding house. But, Vasya is attracted to him even though his mysterious past. The girl does not realize that her life will change forever with arrival of Tikhonovs, and her feelings will be destined to soar above the sky .