In 2118, 99.9% of humanity was wiped out by an invading alien force known as the Draktor. The survivors' memories are wiped before resuming life in fortified shelters. Humanity mounts an attack to take back the planet using giant robots known as Megaton-class Rogues. Yamato Ichidaiji is called to pilot one of the Rogues, just as memories of the invasion return and dangerous questions arise.

Musashi returns Japan's legendary swordsman and philosopher to the screen once again. In an original period drama based on the historical facts of the life and travels of the famous Miyamoto Musashi we find an apprentice, an instructor and the account of a famous battle in Japan of the Middle Ages where many questions will be answered.