Alexey Senin, a brilliant and world-famous young pianist, lives in a quiet isolated reality, created and managed by his mother and aunt. Here is the only place he feels safe and content. Alexey would spend his whole life in this "music capsule" but for an unexpected encounter. At a party organized by his patron, the powerful businessman Vladimir, Alexey meets Sasha, the patron's daughter. From the first moment of their meeting, Sasha gives him something he has always missed in his suffocating family circle. Together the pianist and the girl are ready to defend their inner world against everything and everybody. But they've got one problem: Sasha is only 11...