Noir has just fulfilled a contract to kill a revolutionary leader, but Kirika is shot herself whilst making the hit. With the remaining revolutionaries hot on Noir's trail and out for revenge, Mireille realises that her only chance of escaping may be to relieve herself of the burden of her injured partner…

Mireille and Kirika are contacted by a man within the Soldats who is willing to give them a book containing valuable information. As the two women follow up this intriguing lead, they once again come up against the ""true Noir"", the mysterious assassin Chloe.