Poison Ivy takes over a seed bank at the Giordano Botanical Gardens where her powers are greatest, and it is up to the reader to choose Batman's path as he tries to prevent her from stealing the historical and priceless plant seeds.
When Catwoman steals an ancient Egyptian sistrum which enables her to command all of Gotham City's cats, the city is rapidly overrun by rats and mice and it is up to Batman to find the lady and retrieve the artifact.
When a half-man, half-bat creature attacks Gotham City, the police think Batman has gone mad. To clear his name, Batman has to defeat the fiendish foe.