Roberto Duran is widely regarded as one of the greatest fighters of all time. But Duran’s life outside the ring was just as fascinating, and both his career and personal events are beautifully detailed in the upcoming film Hands of Stone.

Hands of Stone follows Duran (Edgar Ramirez) from the time he made his debut in 1968 at the age of 16 up until the point retired in 2002 at the age of 50. (He is one of the only fighters to ever fight across a span of five decades.) Highlights of the film include Duran’s long rivalry with another boxing legend, Sugar Ray Leonard (Usher Raymond), from the time Duran defeated Leonard in 1980 to capture the WBC welterweight title, to their infamous rematch where Duran forfeited the fight in the 8th round, muttering the words “no mas” (“no more”), to the duo’s epic third fight, dubbed “Uno Mas”, nearly a decade later.

Hands of Stone also stars Robert DeNiro as iconic boxing coach Ray Arcel, and an amazing supporting cast that includes John Turturro, Ellen Barkin, Jurnee Smollett-Bell, and Reg E. Cathey as the legendary Don King. The film hits theaters August 26th, but you can check out the moving new trailer in the video above.

For more on Hands of Stone, be sure to follow the film on Twitter at twitter.com/HandsofStoneMov, Facebook at facebook.com/handsofstonemovie, and Instagram at instagram.com/handsofstonemov.