For three years Batgirl has been Batman's sidekick. She's Barbara Grayson and she's still in college. But things get more complicated-and the Bat Duo end up having sex with each other on rooftop. Also, the Joker has escaped and captures Commissioner Gordon. Batman is weary of his nemesis and would rather end things peacefully rather than the death of one-or both-of them, but the Joker is indeed crazy. And through a series of flashbacks to the Joker's normal life, before he fell into the vat of chemicals, we see what he used to be and what he transformed into. This is one of the better DC Comics animated movies, based on the graphic novel by Alan Moore. Highly recommended.