In June 1944, as World War II was drawing to a close, Saipan, far away in the South Seas, ushered in the most brutal moment. 70,000 American troops landed on the island and destroyed the Japanese defense with overwhelming superiority. The defeat was certain, and Japanese officers ordered the entire island's military and civilians to "die in glory" to be loyal to the emperor. The beautiful Saipan instantly became a hell on earth with rivers of blood. Captain Ohba Ei (Takeno Uchi Toyo) of the 18th Infantry Regiment of the Army led 2,000 soldiers to launch a suicide attack on the U.S. military. After a hand-to-hand fight, both sides were injured. Ohba escaped by chance and met the remaining comrades of other troops such as Horiuchi Imamatsu (Karazawa Jumi) and Kitani Toshio (Yamada Takayuki). At this time, the belief of "survival" occupied Ohba's heart, and he decided to protect the surviving soldiers and civilians until the end of the war... This film is adapted from Don Jones's long documentary novel "Oba, the Last Samurai: Saipan 1944-45 (Ohba Ei, The Last Samurai: Saipan 1944-1945)", which is based on the real historical facts of Saipan during World War II.