He agreed to help save a besieged, oil-producing colony (established as a small fuel depot at a refinery) from a crazed, marauding wasteland warlord - the threatening Humungus (Kjell Nilsson), by promising to help the refugee community of survivors during a rush for freedom (to a promised land) by driving a big-rig Mack truck (pulling a fuel tanker).Brick: Give me my crutch.Maggie: Why don""t you put on your nice silk pajamas, honey, and come on down to the party? There""s a lovely cool breeze.He learned that his parents were both killed in a plane crash - hence, Peter was adopted by his relatives.His mother naively jokes with the "killers" during their trapped elevator ride about their deadly intentions:You gentlemen aren""treallytrying to kill my son, are you?Everyone laughs boisterously at the ludicrous question and joke - except Roger, the helpless victim.She was still angry at him for ditching her at the Homecoming Dance: "That was a pretty crappy thing to do.