Hippo Knight

In a distant world where hippos live, there were five kingdoms ruled by five kings. They lived peacefully and happily. But one day their peace was disturbed - a wicked troll appeared in Hippopotamia. He attacked the kings and took their crowns. How would they rule without their crowns? It's time to urgently call upon the Hippo Knight - the bravest and strongest, to go in search of the wicked troll and take all five crowns from him.