To country music fans, Johnny Cash is a superstar but to his four daughters, it is Vivian Cash Liberto, their mom, who is the real star of the family – the North Star. In this beautifully crafted mosaic, producer Dustin Tuttle shines the spotlight on his grandmother, Vivian, as the true story of the rock behind the legend emerges. With newly shared footage and anecdotes, the Cash women - Roseanne, Kathy, Cindy, and Tara - describe in vivid detail their mom’s graceful fighting spirit that enabled her to not only survive the loss of her husband to booze, pills, and June Carter Cash but to flourish as she reinvented herself in later life. Though forever linked to a voice adored by millions, Vivian instinctively knew that her quiet voice was heard in her unwavering devotion to family, church, and community.