A 13-year-old girl grows up between a boxing ring and the street. Her friends are guys who kill and rob. In the 1990s the whole city hates them, but for Masha they are the best people in the world, who love and protect her. She sings them jazz and dreams of becoming a singer. But one day Masha learns who they actually are and what they have done to her life and family. She matures, leaves the small city for Moscow, trying to break with her past. But one day the past stands directly before her.

A girl named Masha is soon to be 20 years old. She's feeling really anxious about it, because being 20 means being an actual adult - and her day to day life just doesn't look the part. We observe Masha's life for one full day. And that day the girl notices something weird - and tries to get rid of it.