Olya and Sasha are 17, and they are coming from Moscow to the Black Sea - to have fun after graduating from school and, more importantly, to meet Olya's father for the first time. Right at his doorstep Olya has a sudden change of heart and a more energetic Sasha takes her place, introducing herself to a gruff loner Sergey as Olya, his daughter, and introducing Olya as Sasha, her friend. An innocent lie soon grows into a complicated and erotically charged psychological game.