In this WW II drama, the commander of the French cruiser Lafayette is sunk by a German U-boat. Following the rescue of the survivors, the commander undergoes an investigative hearing to determine his culpability in the sinking. He didn't know it at the time, but his philandering young wife was trysting with a handsome young officer and ended up stuck on the cruise. The woman survived the incident. To save her husband's career, she tearfully admits her adultery in court.