Lazarus, a mysterious toymaker, hides in a crumbling mansion by the sea, surrounded by his mechanical creations. When Irene's mother becomes his housekeeper, Irene uncovers dark secrets and strange lights that draw her and Ismael into a haunting mystery.

The author's ability to weave magical and shadowy worlds through his writing is unparalleled, creating a tale where lights and shadows guide each character to find their own path.