On their way to graduation Anton and Alina, Mark and Sonya, Alex and Katya are just starting their adult life. They fall in love, dream, and make plans for the future. But when a tragedy strikes at the party, the kids, their parents and the detective must restore the picture of what happened on that feral night. The further the interrogation delves, the more troubling issues and secrets are revealed. The teenagers are confused and scared, and parents wonder if they know their children at all.