AllMovie

In this WW II drama, a captain attempts to navigate his Italian submarine through enemy waters. He is stalked by a British commander assigned to destroy the sub. The Italian captain somehow succeeds in getting into neutral waters and is granted permission to stay there a fortnight. The British commander also stays in Tangiers so he can monitor the Italian. During their stay, the two agree not to fight and gradually come to respect each other. Meanwhile an intelligence officer, tries to upset the careful balance between the men. He uses the Italian's lover to get him to make a move. It works, and the Italian accuses his girl of spying and leaves the safety of port. The British commander follows and ends up losing his ship to the Italian's torpedoes.