Do you remember in season one, when all the ninja acted stupid, were stupid, looked stupid, knew nothing, were clumsy at basically everything and yet could probably win a gymnastics medal for the best flipping? I do! And I thought to myself, "Self, wouldn't it be hilarious if season 1 Kai met season 13 Kai?" Then I was like "Yes Self, it would be! Let's write about it!" (All the ninja will join eventually as well. NOT A ONE-SHOT! Also this isn't a crack, maybe it is but its treated seriously.) SUMMARY: Kai suddenly finds himself stuck in the past. He can't change this realitys future but doesn't want to alter it too much either. Once he gets to the past he realizes something really important... his past self and all the other ninja were complete morons.