"Breakthrough" is based on the inspirational true story of one mother's unfaltering love in the face of impossible odds. When Joyce Smith's (Chrissy Metz) adopted son John (Marcel Ruiz) falls through an icy Missouri lake, all hope seems lost. But as John lies lifeless, Joyce refuses to give up. Her steadfast belief inspires those around her to continue to pray for John's recovery, even in the face of every case history and scientific prediction.