Titusville, August 27, 1859: Colonel Drake discovers a deposit of oil - black gold! Immediately, the Oil Rush is on. The mayor of Titusville calls on Lucky Luke to help maintain order. When Lucky Luke arrives, everyone - from the sheriff to the undertaker - is drilling. As soon as a well is opened, the fight begins. In comes Barry Blunt, a rich prospector who buys up, one by one, all the oil shafts from their owners. But his more-than-suspicious methods draws the wrath of Lucky Luke...