A group of Contractors, called MI-6, capture a once deadly Contractor called Havoc, who has lost her powers. Upon retreiving her they take her to Tokyo to be experimented on by the Pandora Institute. After watching a helicopter take Havoc away Misaki meets Jack Simon aka November 11. Later on as they are driving down the highway, Misaki finds out that Havoc really isn't on the helicopter. Where is the real Havoc and how does Hei know her?

Kastenin, Gai, and Kiko take Yin back to her home town, meanwhile Hei is given the order to kill Yin and is given her location. Getting to Yin is not going to be that easy since th contractors from before are still after Yin and have their own method to finding her. The race is on once more, but this time Hei must make the choice on whether or not to kill Yin. Will he kill her or will the option be taken from him?

Suo and July find themselves in a dangerous situation thanks to a double-crossing supposed ally. Later, when the young pair is abducted by an especially sinister Contractor, BK-201 must spring into action.