"I laugh at gravity all the time. Heh heh, gravity."
As our heroes approach the North Pole, they hear rumours of flying people - not from the past, but still living, over at the Northern Air Temple. However, upon arriving, they discover not air benders, but ordinary refugees who have used technology to fly and do other amazing things. All this invention comes at a cost, however, often destroying the original architecture of the temple, and Aang finds himself distressed to see his heritage being destroyed. As he tries to come to terms with how much things have changed, the Fire Nation continue to advance, seeking out the refugees' technology.