"Hush, Chapter 5 of 12: The Battle"
*Batman and Catwoman must battle Superman and free him from Posion Ivy's control. Batman uses Metropolis' lead-lined sewer system and his fragment of kryptonite to his advantage, while Catwoman stages a false hostage situation with Lois Lane to shock Superman out of Ivy's control. Together with Krypto, they track Ivy down and capture her, but they still have no idea who is behind her activities. *Source: DCUGuide.com