A boy's experiences on a foggy day at Öresund, the water between Sweden and Denmark.

Captain Stone's newly recruited officer, Tom Merriam, idolizes his senior who treats him like a friend. But when a couple of his crew members die mysteriously, Tom starts doubting Stone's authority.

A disgraced merchant marine officer elects to stay aboard his sinking cargo ship in order to prove the vessel was deliberately scuttled and, as a result, vindicate his good name.

A Newfoundland fishingboat comes to the aid of a wrecked Danish sailing ship and tows it to a small village, but eventually the captain of the fishingboat realises that it's a U-boat supply ship in disguise, loaded with torpedoes. So, together with his crew and a group of villagers he sets about a plan to blow the ship as well as any U-boats that approach it. Based on the novel "The Gaunt Woman" by Edmund Gilligan.

An aircraft carrier is sent on a decoy mission around the Pacific, with orders to avoid combat, thus lulling Japanese alertness before the battle of Midway.