This drama relates the "inspiring and unknown true story" behind the beloved, chart-topping song that I've totally never heard of. If you're a big listener of Christian rock radio, maybe you have. The "unknown" story behind the 1999 song is that it was written by the band MercyMe's lead vocalist, Bart Millard, after his father died. First time actor J. Michael Finley stars as Bart. Dennis Quaid stars as his dad. Who dies. The film is directed by Andrew and Jon Erwin, who gave us previous Jesus-based flicks October Baby, Woodlawn and Moms' Night Out.110 minutes PG.