The plot they described corresponds with the first and second episodes of Avatar : The Last Airbender , where the `` water people '' ( Katara and Sokka ) rescue the `` air guy '' ( Aang ) while `` trapped in a snowy wasteland '' ( the Southern Water Tribe ) with `` some fire people ( that ) are pressing down on them '' ( Fire Nation Troops and Zuko ) .
The idea caused the pair to think : The plot they described relates with the first and second episodes of the series , where the `` water people '' ( Katara and Sokka ) find the `` air guy '' ( Aang ) while `` trapped in a snowy wasteland '' ( the Southern Water Tribe ) with `` some fire people ( that ) are pressing down on them '' ( Fire Navy and Zuko ) .