In this story of murder, mystery, and romance, Batman sets out on a simple mission to discover the identity of the mysterious character wreaking havoc in his life and ultimately finds himself in battle against his greatest ally. Working with Catwoman, the Dark Knight Detective goes in search of the deadly Poison Ivy to learn of her role in this latest plot against him. But when her trail leads to Metropolis, a war of epic proportions breaks out as the Man of Steel stands in the Dark Knight's path. Featuring a monumental battle between Batman and Superman, this book also includes appearances by the ravenous Killer Croc and the female vigilante Huntress.