The film's plot follows frank sheeran's involvement with a. Webthe wedding, like other key events portrayed in “the irishman,” really happened, a scaffolding of hard facts within which sheeran’s largely uncorroborated tale. Webmartin scorsese’s new film, “the irishman,” follows the story of frank sheeran, a man who was allegedly involved in the disappearance of jimmy hoffa. But hoffa experts say the story is not based in fact. But hoffa experts say the story is not based in fact. Webbut when it comes to the true story, there are many conflicting accounts. Webthe irishman shows frank sheeran killing crazy joe gallo, based on sheeran's own confession, but some have tried to separate the fact and the fiction of. Webmartin scorsese's the irishman is an exciting depiction of the events surrounding jimmy hoffa's disappearance, as told by frank sheeran.