 Trumpet finds Jess Weaver (Tom Drake), a young disabled man, arranging for an operation to fix his legs, injured in a riding accident.Afterward, Weaver goes along with the deception and soon earns his Navy wings and commission as an ensign.While on a submarine patrol mission, Trumpet launches an unauthorized attack on a German submarine (ignoring orders sent to break off the attack), but Weaver's bomb misses and the submarine fires back, hitting the airship.