For all its beauty, a sand-castle will inevitably be ruined, and it will be much more difficult to build anything on its place.
Anybody would envy the life in Bogutskii family. Aleksandr is a real celebrity in the world of medicine. His wife Liudmila is his reliable assistant and inspirer, and the daughter Lisa is an honor-roll student and a decent successor of the family business. They have neither enemies nor haters.
However, one day Liudmila receives a strange message – a photo of the grave of her friend who died many years ago. The echo of the student’s friendship and treachery returns from the past and ruins the untroubled life of Bogutskii family like a sand-castle...