Hunter x Hunter: The Last Mission" is the second film in the Hunter x Hunter anime franchise. It revolves around the conflict between two factions of Hunters: the righteous side led by Chairman Netero and the dark side, which seeks revenge. Gon and Killua get involved when the dark side attacks during a Hunter Association event, and Netero's past connections to the dark forces are revealed. The film explores themes of justice, vengeance, and the moral complexities of the Hunter world.