During the Civil War, Union Corporal MacDonald is entrusted with a large shipment of gold. He decides to keep the cargo, and stashes it for later rescue. He is the only one who knows where it's buried, but is killed. A Union Lieutenant and McDonald's two sons race to find out where the gold is buried.

The ten gladiators are hired to travel to Arbela, a small country on the outskirts of the Roman Empire to learn if Parthia is planning to war with Rome. Upon arriving, the heroes decide to kidnap the beautiful Parthian queen and spirit her to Syria to serve as a hostage.