The Osage Indians lost their ancestral freedom on a windswept reservation in Oklahoma. Now, in the Roaring Twenties, the land is spewing black gold; oil has been found, and every Osage owns a share of the rights. Soon Osage tribal members are being killed for their oil royalties while a corrupt sheriff turns his back on the murders. Assigned to unravel the mystery and halt the murders, Special Agent Frank Gordon organizes an undercover operation while working openly with frontier legend U.S. Marshall Will Proctor. Their investigation unearths a string of thirty-three murders, and as they race against death, Osages are still being killed. Gordon is determined to bring down the mastermind behind the ring of cold-blooded butchers. But when one of his own men is murdered and the killers turn on him, Gordon realizes there is a law beyond the law - the law of survival...