Dans les années 1980, à Gotham City, Arthur Fleck, un humoriste de stand‐up raté, bascule dans la folie et devient le Joker.

Des histoires d'amour s'entremêlent entre le passé et le présent...

Having been lured into becoming a corrupt cop on the wrong side of the law , Detective "Wilfred La Salle" embarks on his journey to right the wrongs he has committed while also facing off against his former friend and partner now turned criminal mastermind "Gorgeous George" and his criminal Syndicate made up of some of the most dangerous men in the city simply known as - "The Clown Gang"