Hellriders (2012)

The world as we know it has ended in chaos, war and destruction. Mankind is on the brink of extinction. The few survivors roam the wilderness of the wastelands in search of food and shelter, their lives governed by the law of the survival of the fittest. Some have formed ruthless gangs which raid the ruins of civilization and kill everyone in their wake. One of those gangs, the Hellriders, led by an ex-priest who's lost his faith during the events of the apocalypse, comes across a "treasure map" leading to a series of safe locations where the former members of parliament sit out the nuclear fallout surrounded by the luxuries of the world before. When the Hell Riders raid the first of these bunkers, an unexpected turn of events leads Priest to adopt the two sons of the resident politician. He renames them Grim and Reaper and trains them to become unforgiving killers like the rest of his gang. Over several years they follow their new father on his path of destruction until a dramatic situation pushes Grim to make a choice which makes him an outcast of the gang. Left behind to die by the others, he's however rescued and initiated into another way of looking at life which changes him profoundly. When Grim, who now calls himself by his real name again, sets out to go after the Hellriders, a series of twists makes him realize that sometimes revenge works in mysterious ways and that there still might be hope for mankind after all to rise again from the ashes.