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, in the middle of the day, the sun gradually vanishes. Moko is frightened and wonders what wizard could do such a thing. With the village wise man, they set out to find the sorcerer who made the sun disappear. They question all the sorcerers they know but fail to find the one responsible for such an act. So they decide to join all the people of their village and the neighboring villages and watch the sky. An old woman watches them, smiling. She explains that when she was a child the same thing happened, but that the world would become normal again. And indeed the sun returned at the end of the solar eclipse. Moko told himself that perhaps the sun was simply tired and for once decided to go off and take a nap.