Picking up where Mad Max left off, 1981's The Road Warrior continues the story of Max Rockatansky (Mel Gibson), a spiritually shattered ex-patrolman wandering the post-apocalyptic Australian roadways. In Mad Max, Max's wife and child were killed by a murderous gang of bikers, and while he exacted revenge, Max crossed a metaphorical boundary at the conclusion of that film, abandoning the rule of law and order for revenge and barbarism.
But events unfold that soon thrust Max back into human contact. Always low on gas, he discovers a fuel depot protected by a group of survivors under siege by a small army of savage looters, led by the massive, iron-masked Humungous. While his initial foray into the depot is driven purely by greed, Max is ultimately forced to make a choice between selfishness--getting his gas and fleeing--and altruism--helping the survivors break through the Humungous' encircling gang and escape to a better life elsewhere.
Max strikes a bargain to bring a tanker capable of hauling the gas out of the compound, in exchange for his own share of the fuel. The leader of the survivors, Papagallo, accepts, but later forces Max to confront his past and his very reason for existence. He challenges Max when the latter spurns companionship and chooses to leave with his car and his gas after fulfilling the bargain, rather than joining the band heading for the coast and a fresh start. "You think you're the only one that's suffered? We've all been through it in here. But we haven't given up," Papagallo says. "We're still human beings. But you--you're out there with the garbage. You're nothing."
But events in The Road Warrior lead him to an epiphany about his place in the world, knowledge that there are still good things worth fighting for, and rekindle his desire to help restore order and peace. Max, bloodied and broken in body but not spirit after surviving a failed solo escape attempt, returns to drive the tanker out of the depot, helping save the survivors and spring them to freedom.