Watch Once Upon a Christmas Miracle for Free: How to Stream the Movie Online at 123Movies. . Told she would have less than a few months to live without a liver transplant, Heather Krueger’s time was running out when a kind stranger, Chris Dempsey, heard of her plight and discovered he was a perfect match. The two met and before long a friendship developed into romance. The movie follows Heather and Chris’ journey over three Christmases as his selfless gesture leads to a Christmas miracle for everyone involved. Based on a true story.