The novel's protagonists, Ertuğrul and his cat Mr. Long Tail, set off following news from the Land of Fairies. After an adventurous journey, they become part of the tale of 'strange things with hats.' They hear the whispers of the fairies and join their conversations. Here, Ertuğrul has his first opportunity to meet his father's family. He immediately adapts to the family environment he had longed for for years. As his friendship with his grandfather Mercury, who is passionate about science, grows, he devotes himself to science. They bathe in the murky waters of the Kızılırmak River and discover the heavenly gardens of Püsküllü. They wander on the back of his grandfather’s horse, Venus, and make plans among the vineyards. Together with his cousin Oğuzhan, they try to solve the mysteries of the sky in the mysterious attic of their mansion. They keep chasing their dreams. One day, they learn that their mansion has to be sold. To save the mansion, they set out to search for treasure inside the Fairy Chimneys and find themselves in the middle of a great adventure...