This story is about a boy named Tomas who goes on an adventure in Paris with his father. While staying with his godparents, who live near a forest, Tomas and his father hear strange noises coming from a cave. They investigate and discover a dragon inside. Tomas bravely throws dental paste in the dragon's eyes, causing it to fall asleep. The next day, while exploring deeper in the cave, Tomas and his father find a suitcase containing clothes and vegetables. When the dragon reappears, Tomas throws the vegetables at it, and surprisingly, the dragon enjoys eating them. The three then share a meal together, and Tomas realizes adventures can be found in unexpected places.