Anatomy of Hell
A guy adopts a woman from the suicide attempt in a nightclub. Walking the streets he is propositioned by her : She'll pay him to go to . There she will be quietly watched by him. He's reluctant, but yeah. As the four nights progress, they become intimate with each other, and there grows also a mutual fascination/revulsion. By the finish of the "contract", these two absolute strangers may have had a profound impact on each other.