Noir is an ancient goddess, or shall I say 2 goddesses. Soldats is an organization that was formed a long time ago, and they had 2 highly trained assassins called Noir. Mireille meets Kirika, but Kirika doesn't know who she is, and has no memory of anything. She has a watch that Mireille recognizes, so they team up until they can find out Kirika's history, but for some reason Kirika is a very deadly assassin. They team up as an assassin team and call themselves "Noir". Chloe comes in and disrupts everything, and tells them a bit about their history, they start being slowly drawn into the secrets of Soldats.

Noir is probably one if my favorite animes of all time. It starts off a bit confusing, but as it unravels it pulls you in.