Louie the Lilac has cornered the flower market in Gotham City, hoping to gain control over the entire "flower generation". He kidnaps the organizer of their planned flower-in, Princess Primrose, and brainwashes her with his Stupefying Aromatic Spray. Batman and Robin follow a clue to the villain's lair only to be captured by Louie and fed to his giant man-eating lilacs. With the Caped Crusaders out of the way, Louie heads back to the flower-in to continue his evil plan. Alfred, meanwhile, has been alerted to Batman and Robin's situation, and goes looking for Batgirl to aid in the fight.
Wealthy entrepreneur Bruce Wayne and his ward Dick Grayson lead a double life: they are actually crime fighting duo Batman and Robin.
A secret Batpole in the Wayne mansion leads to the Batcave, where Police Commissioner Gordon often calls with the latest emergency threatening Gotham City. Racing the the scene of the crime in the Batmobile, Batman and Robin must (with the help of their trusty Bat-utility-belt) thwart the efforts of a variety of master criminals, including The Riddler, The Joker, Catwoman, and The Penguin.