He had supporting roles in films such as 16 Blocks, The Terminal, Confessions of a Dangerous Mind, The Sum of All Fears, Jericho Mansions, Max Payne and Pawn Sacrifice. He was the male lead in the 2004 horror film Eternal. In 2009, Pla was the Writer and Director for Burning Mussolini, in which he also acted opposite his friend and ReGenesis co-star Peter Outerbridge. In 2013, he had a supporting role in the film Riddick as Vargas. He also played the main antagonist of Assassin's Creed IV: Black Flag, Governor Laureano de Torres y Ayala. He also played the voicing of Jackal in Rainbow Six Siege.