Watch: Promo for Back on Board: Greg Louganis Doc

Directed by Cheryl Furjanic, the documentary Back on Board: Greg Louganis tells the story of the one of the greatest divers ever -- from his difficult childhood, through his Olympic conquests, to a transformative post-Olympic life as an LGBT activist -- and his impact as one of the first openly gay athletes in the United States. After being screened at festivals, the film is now going to debut August 4 on HBO Sports.

"I always wondered what happened to Greg Louganis," Furjanic says. "When we first approached him, we had no idea that we would find him facing such difficulties. During the three years we spent making this film, one thing that became clear is Greg's resilience. HBO is the perfect platform to reach both audiences who cheered Greg on during the Olympics and a younger generation who has never heard of him."

RELATED | GREG LOUGANIS' WEDDING PHOTOS

As writer-producer Will Sweeney explains: "Greg's story is connected to so many important moments in American history, including the Olympics, the AIDS epidemic, the gay rights movement and even the recent home-foreclosure crisis. Greg's return to diving to mentor the Olympic team gave us a natural way to tell his unique story and explore his enduring legacy. We are thrilled to release the film with HBO Sports."

Watch the promo for the film below: