太平洋战争期间，一艘美国潜艇在太平洋上攻击日本舰队、船只，并营救落水飞行员的故事。影片意在通过对一艘美国潜艇在太平洋上的作战历程，来表达美国潜艇部队在二战期间做出的极其重大的贡献！

Sal comes to the Barbary Coast from New England to find out who murdered her brother. She gets a job signing in Dude's saloon, falls in love with Dude, then wonders if he might be involved in the murder.