its pretty good, i prefer ATLA over this story but its not bad, i do however think that season 4 ends up a bit too similar to naruto's pain arc. while i was watching it korra and the antagonist are talking and the conversation basically goes the same way as naruto and nagato talking to each other in the pain arc, but without the backstories. overall good watch, i think the fighting was a bit underwhelming compared to ATLA, but still enjoyable. also why is there so much grunting, kinda weird.