In the Oscar-season finale of The Envelope video podcast, we sit down with Colman Domingo, lead actor nominee for 'Sing Sing.'

Colman Domingo is opening up about the "hopeful" message of his latest Oscar-nominated film, " Sing Sing ." Domingo, whose work in the film earned him an Academy Award nomination for best actor, stopped by "Good Morning America" on Monday to reflect on what this project means to him.

A true story developed by co-writers and producers Clint Bentley and Greg Kwedar (who also directed) and RTA alumni Clarence “Divine Eye” Maclin and John “Divine G” Whitfield, the film stars Oscar nominees Colman Domingo and Paul Raci alongside an ensemble of formerly incarcerated men who participated in the RTA program,

When Colman Domingo was making The Color Purple in Atlanta, he drove past three penitentiaries on the way to rehearsals. “I had never thought about prisons,” he recalls. “I sort of looked away. It was almost like a stain that you didn’t want to look at because you didn’t want to be there. You didn’t want to know anybody there.”

The actor says he's never before put so much of himself into a role. How could he not? His co-stars once actually lived in that world.