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, Moko and Mei-Lei are resting in the shade of a tall tree. Mei-Lei is wondering whether Moko will be leaving her and saddened by this thought she walks away. Moko sets off to try to find her in the tropical forest. Droplets of water stream down from the trees like rain. Night falls and Moko can no longer see anything. He decides to wait until morning to go on. The next morning, Mei-Lei has returned and she is smiling because she sees that she must mean a lot to Moko since he came all this way to find her. He thinks that the trees have stopped crying now that Mei-Lei is no longer sad.