"When animals and people begin to disappear in one of Gotham City's parks, Batman suspects that the deadly Poison Ivy and her creepy plants are at work. But the green villainess is locked behind bars."--

Harley Quinn has captured Robin! But this crazy quack is only using the Boy Wonder as bait. Her true target is Batman, and she's left clues all over Gotham to lure him into her trap. If the Dynamic Duo can't escape her clutches, they'll both become Harley's gift to her evil boyfriend, the Joker.