In Oklahoma, at the turn of the twentieth century, oil brought fortune to the Osage Nation, who became some of the richest people in the world overnight. The incredible wealth of these Native Americans immediately attracted white interlopers, who manipulated, extorted, and stole as much Osage money as they could before resorting to murder. Based on a true story and told through an improbable romance, Martin Scorsese's star-studded adaptation of David Grann's best-selling book is an epic western crime saga - where real love crosses paths with unspeakable betrayal - that depicts the string of brutal crimes that would come to be known as the Reign of Terror.