It's only a few months since Gregor and Boots returned from the Underland, leavi
ng their mother behind to heal from the plague. Though Gregor's family receives
frequent updates on her condition, they all know Gregor must return to fulfill h
is role as the warrior who is key to the Underlanders' survival. Accompanied by
his now-talkative little sister Boots, still considered the honorary "princess,"
Gregor joins forces with another princess - 12-year-old Luxa - and Ripred the r
at to defend the Underlanders and the vulnerable "Nibblers," or mice, from the r
at army.
