Barborka and Tomík spend the holidays with their grandmother and grandfather in the forge under Dračí skála, where the unconventional helper, the two-headed dragon Čmoudík, works with all his might. Once, when the children are about to spend the night in the cave together with the dragon, they discover an old map on the wall of the cave, and Čmoudík, one head of which speaks Czech and the other Slovak, begins to tell an exciting story about the creation of the kingdom of the Dragon, the great love of Princess Adéla and Prince Janko, about the years-old curse and the terrible Dragon, about the evil elf Bliwajz, but also about the secret of the Oblivion Meadow, the lost dragon's egg and a pair of kangaroos. Are you interested in when dragons dance hip hop, how Christmas is celebrated in a dragon's cave, what magical power a dragon's tooth that hasn't been brushed for a hundred years has, and especially why a dragon has a headache?