In Gotham City, mentally troubled comedian Arthur Fleck is disregarded and mistreated by society. He then embarks on a downward spiral of revolution and bloody crime. This path brings him face-to-face with his alter-ego: the Joker.
When a Roman General is betrayed, and his family murdered by an emperor's corrupt son, he comes to Rome as a gladiator to seek revenge.
Following the sudden death of his mother, a mild-mannered but anxiety-ridden man confronts his darkest fears as he embarks on an epic, Kafkaesque odyssey back home.
On the rocky path to sobriety after a life-changing accident, John Callahan discovers the healing power of art, willing his injured hands into drawing hilarious, often controversial cartoons, which bring him a new lease on life.