Having gone into business as Noir, Mireille and Kirika take on their first job together- the assassination of a far right terrorist and his collaborator in the Peace Department.

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…

When Kirika begins spending all her time down at the river in the company of a young painter, Mireille warns her not to get too close- after all, relationships aren't something you can pursue easily when you're in their line of work. Mireille has problems of her own, however- an old job comes back to haunt her when one of the survivors decides to put together his own mission of revenge.

Still upset over the truths she learned in Corsica, Mireille wants nothing more than to be alone, and sends Kirika away for a while. Wandering the streets on her own, Kirika is approached by a faction of the Soldats, promising to supply information. But if Kirika follows this lead, she will be leaving Mireille alone- and vulnerable…

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.