Maria is a little girl who is spending a few days with her grandmother. At midnight, Maria is visited by Butoni; a good monster who needs her help to save his fantasy world from frightening creatures. In a trip full of dangers, magic and adventures, Maria and Butoni teach us how to work as a team and face our fears, as well as keep the monsters of the Valencian collective imagination alive. A participative storytelling with music, puppets and all types of frightening creatures!