The Penguin plans to gain immunity from the law by becoming the police commissioner’s son-in-law. He kidnaps Commissioner Gordon’s daughter, Barbara, and threatens her into agreeing to marry him. Unknown to him, Barbara Gordon has a secret crime fighting identity, Batgirl. Alfred learns of her secret when he is brought to Penguin’s hideout instead of a preacher, and Batman and Robin realize just how valuable their new ally is when they find themselves hopelessly strung up in Penguin’s lair.
Source
Enter Batgirl,Exit Penguin
The Penguin plans to gain immunity from the law by becoming the police commissioner's son-in-law. He kidnaps Commissioner Gordon's daughter, Barbara, and threatens her into agreeing to marry him. Unknown to him, Barbara Gordon has a secret crime fighting identity, Batgirl. Alfred learns of her secret when he is brought to Penguin's hideout instead of a preacher, and Batman and Robin realize just how valuable their new ally is when they find themselves hopelessly strung up in Penguin's lair. Source
