Book 2 in The Underland ChroniclesIn the months since Gregor first encountered the strange Underland beneath New York City, he's sworn he won't ever go back. But when another prophecy, this time about an ominous white rat known as the Bane, calls for Gregor's help, the Underlanders know the only way they can get his attention is through his little sister, Boots. Gregor's quest sends him through the dangerous and deadly Waterway in search of the Bane.