Set against the haunting backdrop of the Bosnian War, this emotional drama follows Gemma (Penélope Cruz), who returns to Sarajevo with her teenage son Pietro (Pietro Castellitto) to revisit the past she shared with his late father, Diego (Emile Hirsch). As flashbacks reveal their intense love affair and the harrowing circumstances that tore them apart, Gemma faces the painful truths of their relationship and the devastating secrets she's kept hidden. Based on the novel by Margaret Mazzantini.