The Riddler has kidnapped Batman and left a trail of riddles for Robin to solve before the next sunrise--or Batman will be gone forever.

Barbara Gordan and Tim Drake are attending a Halloween costume party at Graves Mansion dressed as their secret identities (Batgirl and Robin) when Catwoman strikes, stealing the priceless Black Cat Diamond--but with so many guests dressed up as either superheroes or supervillains the two young crime fighters will have to separate the real villain from her many imitators if they hope to retrieve the valuable prize.

The PENGUIN purchases GOTHAM'S largest media company. Meanwhile, a crime wave hits the city. BATMAN soon learns that these events are related. After the DARK KNIGHT stops a crime, the PENGUIN'S TV news channel edits the security tapes and police reports to make BATMAN look like a criminal. People begin to fear the DARK KNIGHT. If he can't prove his innocence, the hero will end up in prison, and the PENGUIN will fly free.

It's fall in GOTHAM CITY. The air is getting colder, the leaves are changing color, and the people are . . . turning into monsters! These evil creatures are taking over the city, and the problem appears to be spreading. Luckily, BATMAN and his teenage crime-fighting partner, ROBIN, are investigating. Soon, they trace this monster mess back to the GOTHAM CITY CLINIC. Apparently, the evil HUGO STRANGE has been posing as a physician and turning his patients...

Hundreds of trophies and souvenirs fill the rooms of the Batcave, each with a story, and one such tale is how Batman outsmarted Catwoman and her pet jaguar and prevented the theft of a valuable emerald.

Poison Ivy uses a giant Venus Flytrap to break out of Arkham Asylum, but Batman figures out a way to turn the tables on Ivy and add her deadly plant to the collection of trophies in the Batcave.