Medieval soldier of fortune Ettore is traveling through Europe with his partners looking for a fight where they can earn some money. When they come across a Spanish castle under siege by the French army, Ettore bides his time to determine which side is the winning one. This is at first the French, but the treatment he receives from them is unpleasant enough to make him change his mind and turn to the Spanish side. Somehow, Ettore must rally the weakened Spanish troops to battle their enemy long enough for reinforcements to arrive.
The film begins when a stranger arrives in town. He takes quickly to his former mistress, Denise, who is happily married to John, and has an affair with his identiske twin brother Peter. They plan together to drive John crazy. After unsuccessful attempts to blackmail the couple receive the stranger, Gert, to help them with their evil plan.
After a vacation to a seaside resort, a Spanish mayor attempts to modify his small rural town for tourists in an attempt to make money.
