On a bleak future Earth, a soldier endures a radical genetic transformation to save humanity. But his wife fears he's becoming more creature than man.

Ten years have gone by since Elena's six-year old son has disappeared. The last thing she heard of him was a phone call he gave her, saying that he was lost on a beach in France and couldn't find his father. Nowadays, Elena lives on this same beach and manages a restaurant. She is finally beginning to emerge from this tragic episode when she meets a French teenager who strongly reminds her of her lost son. The two of them will embark on a relationship which will sow chaos and distrust around them.

Madrid, summer 2011. Economic crisis. 15-M movement and 1.5 million pilgrims waiting for the Pope’s arrival live side by side in a Madrid that’s hotter and more chaotic than ever. In this context, detectives Velarde and Alfaro must find what seems to be a serial killer. Their against-the-clock hunt will make them realise something they’d never imagined: neither of them are so very different from the killer.