Joker

In 1981, party clown Arthur Fleck lives with his mother, Penny, in Gotham City. Gotham is rife with crime and unemployment, leaving segments of the population disenfranchised and impoverished. Arthur suffers from a neurological disorder that causes him to laugh at inappropriate times and depends on a social services worker for medication. After a gang attacks him in an alley, Arthur's co-worker, Randall, loans him a gun. Arthur invites his neighbor, single mother Sophie, to his stand-up comedy show, and they begin dating.