The 4 elements

don't forget about the extinguisher

they all lived in harmony untill the kindle fire attacked

I’m looking at this on an iPad Air rn

yes

"Water. Earth. Fire. Air. Long ago, the four nations lived together in harmony. Then, everything changed when the Fire Nation attacked. Only the Avatar, master of all four elements, could stop them, but when the world needed him most, he vanished. A hundred years passed and my brother and I discovered the new Avatar, an airbender named Aang. And although his airbending skills are great, he has a lot to learn before he's ready to save anyone. But I believe Aang can save the world."

Ah yes the entire opening to the 4 season of the show, never changing once