England, 1892. The well-known collector and adventurer Christian Montgomery unexpectedly asks his grandson William Jackson to take care of his business for a while. He claims he needs to undertake a journey to Caracas in search of new objects to sell in his antique shop. However, time passes and he doesn't return, and a concerned William decides to ask for help, just as he receives a mysterious letter. In the letter, his grandfather confesses his best-kept secret and asks William to travel to Caracas to bring him his most prized possession: the book that holds the secret of how to make automated animals. From that moment on, William will find himself involved in a thousand-and-one adventures and will face numerous dangers as he seeks to find his grandfather and keep the book safe. Because, to his regret, someone is following him. What will happen to the book? Will William find his grandfather?