The Formula (2016) online

A car moves across a desolate landscape. Following Azar as he brings Zillah dying body to a riverbank, flashbacks reveal the true nature of their relationship and the reason for it's dramatic ending. Their intense love for each other, causes a sudden miscarriage to spark a complete mental breakdown from which Zillah cannot seem to recover. When she finally attempts to kill herself, Azar decides to end her agony by taking her to the place where they both lost their premature child.