The CIA arrives in Japan with a request to help them hunt down a serial killer. The killer, a former CIA operative, has recently gone rogue and has turned up in Japan. He is an especially brutal killer, preferring to skin his victims alive in the pattern of a T-shirt. This sparks an odd reaction in Batou, and his normally laid-back demeanor is replaced with one of furious determination. What is the link between Batou and this man?