Seeking revenge on Batman and Robin, Zarbor uses a mind-altering ray on the both of them, turning them into the villainous Crime Crusaders. With Batman and Robin helpless to stop themselves, only Bat-Mite is left to rescue them and defeat Zarbor.

Batman and Robin track Zarbor back to his home planet, where they find the missing nuclear power plants. There, they have to do battle with the incredibly powerful villain before the Earth runs out of power.

Together, Joker, Clayface, Catwoman and Penguin launch a simultaneous assault on Gotham City, and then Batman and Robin when they turn up to stop them. While this battle rages on, another villain known as Zarbor, who is another imp from Bat-Mite's home planet of Ergo, steals all of the Earth's nuclear power plants.

Penguin creates the Crime-Slime, which has the capacity to turn anyone evil. He uses it on Bat-Mite, turning him from a harmless imp into a villainous little monster. Whilst trying to return him back to normal, Batman and Robin must also deal with the Penguin and his new creation before any more damage is caused.

Gotham City's oil supply is held for ransom by both Catwoman and Clayface, who are working together. The Dynamic Duo, assisted by Batgirl and Bat-Mite attempt to locate the missing oil, and stop the two super-villians.

Clayface recruits a circus acrobat with a remarkable resemblance to Robin, and together, they pose as Batman and Robin, in order to steal an oil-locating device. The real Caped Crimefighters must prove themselves innocent, and then defeat their doppelgangers.

Mr. Freeze is very annoyed that he is not considered one of Batman's most powerful foes, and so set the record straight by becoming Public Enemy Number 1, he creates some incredibly turbulent weather conditions. Batman has to not only find a way to stop Freeze's plan, but has to make sure that no people or property are affected by the cold conditions.

A jailbreak occurs at Gotham State Penitentiary, and the guards soon discover that is was the Joker. He vows revenge on Batman for his imprisonment, and promises to make him the laughing stock of Gotham City. In the meantime Batman, testing out his new helium spray that is capable of making any object float on the air, is contacted by Commissioner Gordon who alerts Batman to a challenge from the Joker. The Dynamic Duo soon spot a large fire at the junkyard, and suspecting that it is the work of the Joker, go and investigate it. There, they find another clue from the Joker which leads them to a famous Spanish singer, currently performing the famous opera Pagliacci, about a clown. On the opera stage, Batman appears and proceeds to spray laughing gas over the audience, including Commissioner Gordon. In reality, it was the Joker in disguise, but when the real Batman turns up at the Opera House, he is soundly arrested. He quickly proves his innocence, and then proceeds to the Gotham City Zo