The largest live fire exercise ever conducted by the Japanese Self Defense Force takes place in advance of the Prime Minister's planned announcement of the repealing of the Refugee Special Action Policy. As part of this exercise, a group of soldiers with the Ground Self Defense Force have staged a 5:30 AM practice raid against a building where a simulated refugee terrorist group is alleged to be keeping a think tank. A Jigabachi assault helicopter is dispatched to destroy the tank, but after firing an anti-tank missile into the target, the pilot of the helicopter suffers a massive heart attack, and the Jigabachi begins to spin out of control...