2010. Maddie works as a doctor in a seaside resort town and is happy with her ten-year-old son, Esteban. But one idyllic summer day, after a morning swim in the sea, Esteban ran to a bakery, some 150 meters away, and disappeared without a trace...2020. Maddie has never gotten over Esteban's disappearance and doesn't believe her son is dead, as the police concluded. Muddy has no doubt that the child was kidnapped. She left the seaside town a long time ago, tries to move on with her life, but one day something forces her to return to that beach - to where she was last with Esteban. And suddenly she sees her son - the same appearance, the same age, even the same swimming trunks. And time seems to stand still for Muddy. Is this really Esteban?.. Or maybe this boy is his reincarnation?.. From that moment on, Muddy is overcome by an obsession - she must find out who this boy, whose name is Tom, is. And she moves to Auvergne, where Tom lives with his mother. The more Muddy spies on Tom, the more incredible Tom's resemblance to Esteban seems to her. Same hobbies, same fears... How far is she willing to go to find out the truth? And to save him - after all, she feels with all her being that the boy is in danger.