Complex sentence: He encounters the prisoner he saved at the beginning of the film, and the man says that McDonagh saved his life, and he has been sober for almost a year, and offers to help McDonagh finally escape his own addiction.
Split into simpler sentences: He encounters the prisoner that he saved at the beginning of the film, and the man says that McDonagh saved his life. The man has been sober for almost a year, and offers to help McDonagh finally escape his own addiction.