Lair takes place in a world that is being threatened by numerous emerging volcanoes, which are causing the whole land to be destroyed and the air to be polluted. Due to this incident, people have divided themselves into two kingdoms: the Mokai, whose lands are arid and depleted of resources, and the seemingly noble Asylians, who live in one of the last remaining bountiful, green areas. The Mokai are naturally angry against the Asylians and are completely desperate to gain their land. Aggressive Asylian leaders are leading in to the path of the inevitable after the Mokai launch a surprise attack against them from the rear.