In 1965, a U.S. Navy submarine sinks. Six men survive, including Bart Millen, the captain. The exec, Nathan Caden, also survived and is sure he was left for dead. Adopting the guise of a long dead white witch doctor, Caden terrorizes Millen and his family for months. Only a black doctor’s knowledge of ancient root medicine practices can turn the tables and defeat Caden’s plan for revenge.