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The story begins with a young Abraham Lincoln (Benjamin Walker) witnessing his mother's murder at the hands of a vampire. Rescued and trained by a mentor named Henry Sturges (Dominic Cooper), Lincoln masters the art of dispatching bloodsuckers with a silver-tipped axe. The film eventually ties this secret war into the American Civil War, revealing that the Confederate army is bolstered by vampires who rely on the slave trade as their primary food source.