Seven years after the first investigation by inspector Tabares and her deputy Sotillo, the Spaniard Miguelanxo Prado returns with an abrupt investigation against a backdrop of child crime. Young Irina, 15, has everything going for her: beauty, academic success, friends.

However, the young girl seems tormented. When a few months later, her parents found her dead in her bed, the theory of suicide was not in doubt for the authorities. But Inspector Tabares is far from convinced by this hypothesis.