Minerva has been using her "Deepest Secret Extractor," disguised as a piece of equipment at her mineral spa, to discover where her wealthiest customers hide their valuables. With this info in hand, Minerva has been able to pull off a string of robberies with ease. When Batman and Robin's investigation is cut short by the villainess, butler Alfred goes undercover to help foil her criminal operations.
Dr. Cassandra and her husband Cabala are behind a string of invisible robberies, thanks to their camouflage pills. When Batman, Robin, and Batgirl attempt to stop their next theft, the crooks turn them into 2-dimensional figures with their ray gun. Dr. Cassandra then begins work on her final plan - releasing all the super criminals from prison to join her invisible force.
Nora Clavicle, a women's rights activist, uses her influence to have Commissioner Gordon, Chief O'Hara, and the whole police force fired and replaced with women. She cuts ties with Batman and Robin, then launches her plan to blow up Gotham City with explosive-packed mice and collect on the insurance. The Terrific Trio look for a way to neutralize her mechanical hordes before it's too late.
The Joker, just released from prison, teams up with Catwoman. They follow the clues of an ancient riddle to retrieve a nightshirt and an antique crib, which together form a map to a hidden cache of gunpowder which they plan to use for their next crime. Batman and Robin, together with Batgirl, follow their trail, little knowing that they are about to walk right into an ambush.
Batman, ably assisted as always by Alfred, saves Robin from being crushed by a winch at the Tower of Londinium. He also rescues Batgirl from the dungeon at Ffog Place. But Robin gets stung by an African Death Bee as Lord Ffogg and Lady Peasoup get ready to steal the crown jewels at the Bloody Tower.
Lord Ffogg and Lady Peasoup plan to steal a ship-worth of mod clothing material with which they can control the fashion world of Londinium. Ffogg and his men subdue Batman, Peasoup and her girls grab Robin and Lady Prudence uses the paralyzing fog on Batgirl.
"Enter Batgirl, Exit Penguin", is the first episode of Season 3 of the Batman television series', first aired on ABC September 14, 1967 as its ninety-fifth episode. It guest starred Burgess Meredith as The Penguin, and also was the first appearance of Yvonne Craig as Police Commissioner Gordon's daughter, Barbara Gordon, a.k.a. Batgirl.
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 to 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.