A squadron of Japanese Self-Defense Force soldiers find themselves transported through time to their country's warring states era, when rival samurai clans were battling to become the supreme Shogun.
An accident during tests of an anti-plasma artificial magnetic shield at Japan's Ground Self Defense Force East Fuji practice range sends the 3rd Special Experimental Company, under Colonel Matoba on a time-slip 460 years into the past, into 'the Age of civil War'. At the same time an imaginary-number anomaly thought to be caused by interference from the past begins eroding the present.
The Japanese Self-Defence Force suddenly time-travels to 1600s Japan in the middle of the epic battle of Sekigahara. With the latest weapons at their side, they join the battle.
