Max Rockatansky returns as the heroic loner who drives the dusty roads of a postapocalyptic Australian Outback in an unending search for gasoline. Arrayed against him and the other scraggly defendants of a fuel-depot encampment are the bizarre warriors commanded by the charismatic Lord Humungus, a violent leader whose scruples are as barren as the surrounding landscape.
Left behind by her friends on a boat trip, contemporary teen Mabel takes pursuit but is knocked unconscious on an island, where she has a dream involving pirates, sisters, a modern major-general, romance, and adventure.