Every American knows the date December 7, 1941 the morning the Japanese Imperial Navy launched a massive attack on Pearl Harbor. What most people don’t know is that the first shots of the battle were fired by an American naval vessel, nearly an hour before the air attack started! The ship’s target? One of Japan’s four secret weapons the so-called “midget? subs two-man vessels designed to cripple U.S. ships from below, while Japanese bombers rained fire from above.

Examine the role these midget subs played in the Pearl Harbor attack, the technology and strategy behind the subs and the recent discovery of one sub sunk outside the harbor that morning. Accompany marine archaeologists on a dive as they get their first look at the sub and watch as a World War II vet gets his second look 61 years later. Forensic photo analysts use state-of-the-art technology to determine whether a controversial photo taken from a Japanese plane reveals a mysterious fifth sub firing on American ships inside Pearl Harbor that morning. Could the Americans have been warned in time to defend themselves against the Japanese attack?

Pearl Harbor was one of the greatest sea and air battles of the history. For many years, it’s been said that the Japanese soldiers attacked first and that they were guilty of the deaths. However, many historians have doubts about this and they believe that the American soldiers overreacted against a simple exploration mission, provoking the Japanese troops to attack. With the help of experts and pictures taken during the battle, this documentary will try to determine what really happened that day.