Disgraced comedian Arthur Fleck crosses paths with Harley Quinn, the love of his life, during his time at Arkham State Hospital. After his release, the pair sets off on a tragic and ill-fated romantic journey.

Failed comedian Arthur Fleck meets the love of his life, Harley Quinn, while incarcerated at Arkham State Hospital. Upon his release, the two of them embark on a doomed romantic misadventure.