It's Christmas Eve in western Kansas and a snowstorm is gaining strength as Bear Bailey, a devoted Great Pyrenees, tries to comfort his beloved owner Mary. She's in hot water with the local business villain, and Bear's earlier altercation with this miser only seemed to make things worse. When Mary blurts out that she wishes for a different life, Bear blames himself for her despair and runs away.

Meanwhile, Jiff, a Labrador patiently waiting for his own human to meet him at the Rainbow Bridge, sees Bear shivering alone in the blizzard. Knowing Bear won't survive the night without intervention, Jiff agrees to act as Bear's guardian angel on Earth. He is determined to show the Great Pyrenees what the lives of the humans around him would have been like without his presence over the years.

A holiday "tail" for those who love the season but feel the deep loss of loved ones (both furry and human), It's a Wonderful Dog shines a light on the power of love and community, and it reminds us that miracles do exist.