A Japanese ship full of American prisoners is supposed to be Tokyo bound, but the POWs on board realize the ship is being used as a decoy for an American submarine. They stage a revolt which results in the slaughter of 30 women and children. The Americans eventually break into the radio
room and signal the US sub that they are on board. Gunfire is exchanged between the two vessels, the crew is overpowered, and the Americans are saved. Another effort reflecting the strong anti-Japanese sentiments that were so prevalent at the end of the war.