Pope Francis has been hailed as a revolutionary since his election to the papacy in 2013, but he faces a daunting task: to simultaneously reform the troubled Catholic Church and keep it from falling apart. Using first-hand interviews with friends, contemporaries and students, the documentary POPE FRANCIS - THE SINNER explores how an Argentinian Jesuit and self-described "sinner" named Jorge Mario Bergoglio became the most powerful figure in Catholicism, and how he is working to modernize a church in crisis.