From Japan to Singapore. Continuing through the Philippines to Dubai and Yemen. Two former soldiers of fortune, and a grounded airline pilot. Their search for both Japan's priceless national treasure that has been missing since World War Two ended in 1945 and a globe-circling 400 series Boeing 747. A story that is woven around the real-life mystery of the lost Honjo Masamune Sword. One of the 30 world's most valuable lost treasures. Crafted by Nippon's legendary 13th-century Master Blade Smith.