Gregor and the Curse of the Warmbloods

As the plague in The Underland spreads, Gregor begins to understand his role in the Prophecy of Blood, and must summon all of his power to stop the biological warfare that is spreading a plague through the Underland.
Book Two left off with Gregor reading the Prophecy of Blood: a prophecy that calls for Gregor and Boots to return to the Underland to help ward off a plague. But this time, Gregor's mother refuses to let Gregor return to the Underland ...until the rat Ripred assures the family that Gregor and Boots are needed only for a short meeting, which the crawlers will attend only if their princess Boots is present. Gregor's mom finally relents, but on the condition that she go with them so they aren't out of her sight. The Underland plague is spreading, and when one of Gregor's family (cont'd)