Marie kills men. Or maybe she creates justice in the world. She is a serial killer.

After a suitable period of ’mourning’ for her latest abusive and now deceased lover, Marie ventures back into the world and meets Lotte - a very ordinary girl. Despite their very obvious differences, Marie and Lotte become friends and when Lotte’s latest boyfriend becomes abusive, Marie decides to help Lotte and 'takes care of him'.

Thus begins a most unusual partnership. But there is a third party in the relationship. Failed policeman Peter Hansen has a good case - the case against Marie - but he will use it for his own profit.