Agent Matt Graver teams up with operative Alejandro Gillick to prevent Mexican drug cartels from smuggling terrorists across the United States border.

Two gangsters and the woman they love try to survive the most dangerous night of their lives. As if that wasn’t enough, there’s one wild ingredient added to the mix: a time machine.

The final installment finds Marty digging the trusty DeLorean out of a mineshaft and looking for Doc in the Wild West of 1885. But when their time machine breaks down, the travelers are stranded in a land of spurs. More problems arise when Doc falls for pretty schoolteacher Clara Clayton, and Marty tangles with Buford Tannen.

While the Civil War rages on between the Union and the Confederacy, three men – a quiet loner, a ruthless hitman, and a Mexican bandit – comb the American Southwest in search of a strongbox containing $200,000 in stolen gold.