It is Marco's birthday and he receives an invitation from his friend, E. E. Elephant, to visit him in the jungle. Marco has quite a harrowing boat trip across the ocean, but arrives in the jungle safely. His friend, Elephant, takes him to the watering hole to cool off after his trip. Then Marco has a great time laughing with hyena, finding buried treasure with ostrich and even roaring with lion. At the end of the story there is a big surprise. Another birthday wish comes true for Marco.