Master Raindrop Season 1 Episode 19 Integrity

The Elements come into a walled city and have to pay their respects to the city's vain king. When Bu's Terra army can't get into the city, Bu creates a flock of winged garfish to fly over the walls and terrorise the citizens. The Elements defeat the creatures and become local heroes. However, this upsets the vain king who double-crosses the Elements and turns them over to Bu.