Musashi was literally the King Kong of the sea— the largest and most heavily armed battleship of its time. Built in total secret Musashi was finally unleashed in the world’s largest sea battle, which began on October 24, 1944 in the Philippines. Japan’s navy gambled on winning a decisive victory to turn the tide of World War II. Instead Musashi, the pride of the Japanese fleet, ended up at the bottom of the ocean. How did this unsinkable giant go down so fast? Was it overwhelming American air power? Or a fatal design flaw? 70 years later American deep sea explorers and Japanese military experts are determined to solve this 70-year old mystery. But first they must find the missing Musashi.