In August 1943, World War II was in full swing. The submarine Tiger Shark, which belongs to the US military, was ordered to rescue survivors on board and on board an attack on a British warship on its way back. Nearly all of the more than 300 people on board the British warship were killed as a result of the torpedo attack, and only three people narrowly escaped, including a sexy and beautiful female nurse Claire Peggy (Olivia Williams Olivia Williams). Claire's arrival excited this group of American soldiers in their prime, but some were vaguely uneasy, believing that women on board would bring disaster to submarines. Perhaps superstition is not groundless, since the arrival of the survivors, the Tiger Shark has been suffering from a variety of strange failures, but also suffered fierce attacks from the Germans. However, the strange events did not end here, and with the emergence of tribulations, the hidden truth gradually emerged.
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