Watch Return to Dust for Free: How to Stream the Movie Online at 123Movies. . Humble, unassuming Ma and timid Cao have been cast off by their families and forced into an arranged marriage. They have to combine their strength and build a home to survive. In the face of much adversity, an unexpected bond begins to blossom, as both Ma and Cao, uniting with Earth's cycles, create a haven for themselves in which they can thrive.