Freshly released from prison three months ago, Cheyenne cleans ferries while dreaming of running off to Amazonia. Lola is a stunning, selfish Parisian with no scruples who shows up in the North of France to move in with her lover. When Lola kills her sweetheart's wife, Cheyenne, an involuntary witness, knows she will be accused of the murder due to her record. She is obliged to seek help from the local crime lord to get rid of the body. A favour that will sweep the two women into a dangerous game of duplicity, all the while allowing them to make a fortune behind everyone's back.