Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, as a storm approaches, Moko wants to seek shelter beneath a tree on a hill. An old man warns him against staying there, and tells him to return to the village because the tree might suddenly catch fire. On his way, the tree is hit by lightning and bursts into flames. Moko is frightened by the thunderstorm. He thinks that a man who is able to predict such a thing must be a great wizard.