An e-mail containing the words "Make a pilgrimage for the past with me", accompanied by a strangely familiar tune, lure professional hitwoman Mireille Bouquet into meeting with Kirika Yumura, a Japanese amnesiac with amazing killing skills. Could the mysteries of Kirika's lost memories shed some light on Mireille's own past?

It seems like a simple job for Noir when they are hired by a widow to take revenge on her husband's killer. But when the job turns out to be a set-up, the tables are turned, and the hunters become the hunted. Can Kirika and Mireille hope to out-think their enemies and escape with their lives?

In exchange for a document that has a connection with the mysterious Soldats, Mireille and Kirika assassinate a Mafia Don. But the Mafia is well known for its revenge policies, and Noir soon find themselves the target of the ruthless Mafia princess known as the Intoccabile, a woman who Mireille has met long ago, and has cause to fear.

Noir and the Intoccabile still have unfinished business with each other after their last face off, and each side knows that matters can only be resolved with a final showdown. To that end, both sides travel to Sicily, where Mireille and the Intoccabile met as children. But with Kirika's arm injured and Mireille fearful and doubtful about her ability to defeat the Intoccabile, does Noir have any hope of victory? And will Mireille and the Intoccabile's past play a part in the coming encounter?

The mysterious Chloe has one last mission to carry out before she goes home to Altena and the manor- she has been ordered to kill an old NATO intelligence officer. As she journeys to Switzerland to carry out her task, Chloe finds that she is not the only one who has been sent to kill Reimann, and that she may have to protect him if she wants to be the one to eventually take him out.

Ten years ago, Mireille left Corsica with her uncle Claude, who looked after her and trained her as an assassin. Now, Claude has returned to Paris, but Mireille's delight at seeing her uncle again is tinged with doubt. An assassin of Claude's calibre is bound to have secrets of his own- secrets that could spell trouble for Noir…

Kirika and Mireille's partnership has come to an end, and with no place to return to, Kirika finds herself wandering through the wilderness. Found and rescued, she is taken to what seems like a simple country village. Yet when Kirika realises that all the villagers not only recognise her, but have been expecting her arrival, it becomes clear that all is not as it seems.