Marooned in the 19th century Old West, an alien must survive on the violent planet and return to his homeworld to destroy his mortal enemies and avenge his people.
During a raid to a Comanche camp, he rescues Anna, a tall warrior woman. The two become friends and comrades, their fates forever intertwined. They find themselves together in the prairies of 19th century Texas, the bordellos of Civil War-era New Orleans, to Prohibition in the 1920s, the Great Depression, and the vastness of space.
But will they survive hardships through history, the enmity of their southern neighbors and the Civil War, and be able to return to his home planet to exact his revenge?