For Ada and Piper Spencer, singing is as natural as breathing. Talented and determined, the two sisters aim to fulfill their dream of performing on the stages of Nashville. But there is a family secret I am unaware of. As a young man, their father had also tried to break into the music business, before meeting their mother, before joining the Marines and before losing his life in Iraq. Ada and Piper never met him. But the fortuitous discovery of a letter prompts them to embark on a journey to understand who she really was. With the discovery of the truth about him and his life choices, the two girls end up understanding themselves and the special bond that holds their family together. With great new songs and a special cameo from country legend Willie Nelson, this touching story reminds us of the sacrifices we make for those we love.