As Batman hunts for the escaped Joker, the Clown Prince of Crime attacks the Gordon family to prove a diabolical point mirroring his own fall into madness.
Following a brutal series of murders taking place on Halloween, Thanksgiving, and Christmas, Gotham City's young vigilante known as the Batman sets out to pursue the mysterious serial killer alongside police officer James Gordon and district attorney Harvey Dent.
When the Flash finds himself dropped into the middle of World War II, he joins forces with Wonder Woman and her top-secret team known as the Justice Society of America.
