When Arturo Cañas, a writer of historical novels, finds an old military amulet at a market in Madrid, he has no idea that he is about to embark on an adventure that will take him from the echoes of the Spanish Civil War to the shores of Cuba. In his eagerness to discover the identity of the soldier who carried that bullet-catcher with him, Arturo will enter a labyrinth of forgotten letters, historical clues and enigmatic characters that will transform his search into a race against time. With a narrative that intertwines the present and the past, Luis Mollá invites us on an exciting journey full of emotions, secrets and revelations. Will Arturo be able to unravel the truth behind this object and the man who carried it? Or will the enigmas of the past remain forever in the shadows?