Bespectacled pistolero Stan Ross comes to Canyon City and becomes involved with two feuding factions, after a clerk has been killed by the banker Jefferson during a botched holdup, while robbing his own bank.

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.