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

An epic Roman fable set in an imagined modern America. The city of New Rome must change, causing a conflict between Caesar Catilina (Adam Driver), a genius artist seeking to leap into a utopian and idealistic future, and his opponent, Mayor Franklyn Cicero (Giancarlo Esposito), who remains committed with a regressive status quo, perpetuating greed, particular interests and partisan warfare. Divided between them is socialite Julia Cicero (Nathalie Emmanuel), the mayor's daughter, whose love for Caesar has divided her loyalties, forcing her to discover what she truly believes humanity deserves.

The uneventful, aimless lives of a London electronics salesman and his layabout roommate are disrupted by the zombie apocalypse.