Avatar Aang asks his friends to help him honor Yangchen's Festival--one of the highest Air Nomad holidays, which hasn't been celebrated in over one hundred years. pBut cryptic visits from the spirit of Avatar Yangchen herself lead Aang to discover a jointly owned Fire Nation and Earth Kingdom refinery--operating on land sacred to the Airbenders! Is this the cause of the pollution Aang finds there, or is a more mysterious menace afoot p The official continuation of iAirbenderi from the original series creators! p Continues to top the sales charts! p The perfect companion to iThe Legend of Korrai! pOne of the best new pop culture mythologies to debut in the last decade.--Kotaku pA fantastic glimpse into the post-series universe.--Bleeding Cool