The combustion benders were attacking the air temple, so Kai flew up into the sky on his windglider while using his air bending to keep in the air to distract the combustion benders so all the air benders and you could get away

Kai got hit by one. If the combustion benders attack smoke came in the air, and he plummeted down to the ground unconscious alive tho, as you watched with terror and everyone else ran for it