Béatrice, a solitary young jazz singer from a genteel Parisian suburb, meets a mysterious woman named Polina. Polina visits her at night and whispers in her ear: ‘There are people who leave their bodies and their bodies go on living without them. These people are named Natasha’. César, a lonely Mexican actor working in a call centre, receives the opportunity of a lifetime: a role as a serial killer on a French TV series. But as he prepares for the audition, he starts falling in love with the psychopath he is to play. Béatrice and César are drawn deeper into a city populated with visions and warnings, taunted by the chorusing of a group of young women, trapped in a windowless room, who all share the same name – Natasha.