Since Sal (Gael García Bernal) has lost Zoe (Renate Reinsve), the love of his life, he has been living only in his memories: memories like fragments of a shattered mirror that cannot be put back together. Sal's sister Ebe (Bérénice Bejo), who observes her brother with growing concern, suggests he turn to Another End, a new technology that promises to ease the pain of separation by briefly bringing back to life the consciousness of those who have died. Sal finds Zoe again in this way, but in the body of another woman. What was broken suddenly seems to come together again. But this joy is fragile, fleeting, treacherous. Can love truly survive as a secret guarded by the body?