since you don’t know what the Rift comic is about. I then direct to the avatar wiki the rift page. Aang asks his friends to help him celebrate Yangchen’s Festival, one of the highest Air Nomad holidays, which has not been held in over a hundred years. However, visits from the spirit of Avatar Yangchen herself lead Aang to discover a jointly owned Fire Nation and Earth Kingdom refinery which is operating on land sacred to his people. I believe this comic will have environmental theme to it.