This is based on a true story. During the Civil War, a Union spy, Andrews, is asked to lead a band of Union soldiers into the South so that they could destroy the railway system. However, things don't go as planned when the conductor of the train that they stole is on to them and is doing everything he can to stop them.—
During the Civil War Union spy Andrews and his men volunteer to steal a Confederate train and drive it to Union territory while destroying the Confederate railway system along the way.