Luiz and Romeo are going to celebrate a Brazilian Christmas together with their family. Grandma's boyfriend tells Luiz old stories about the Yule Goat. When Luiz and Romeo have gone to bed, they hear a noise coming from the living room. The brothers look more closely into the matter and discover that the Christmas presents have disappeared ... They venture out on a scary Christmas adventure to find out who has stolen their gifts. Dark Creatures – The Revenge of the Yule Goat is the third book about the Danish-Brazilian brothers, Romeo and Luiz, and is inspired by the old Norse mythology about the Yule Goat and by the Brazilian way of celebrating Christmas.