On orders from Mithril, Sousuke has been forced to abandon Kaname to focus on learning the secrets of the Arbalest and the lambda driver.
Meanwhile, Kaname—left to the care of a remote and anonymous intelligence agent—feels the threat from a mysterious pursuer drawing ever closer. Their challenges will lead them both to the tension-racked streets of Hong Kong, a city even more divided than the burgeoning couple's destinies. A series of climactic showdowns will bring them to a reckoning with enemies old and new!