According to comicbook.com, Warner Bros. has released for the synopsis for Joaquin Phoenix?s ?Joker? film. ?Joker centers around the iconic arch-nemesis and is an original, standalone story not seen before on the big screen.? The exploration of Arthur Fleck ( Joaquin Phoenix), a man disregarded by society, is not only a gritty character study, but also a broader cautionary tale. ?Joker? hit movie screens on October 4, 2019.