I've been reading the Redwall chronicles since I was little. This is the story of the son of Matthias, warrior of the abbey of Redwall, and the revenge of Slagar. The fox Slagar and his mother formed an unlucky alliance with a horde of rats previous to the book, and were betrayed and slaughtered by them Slagar survived but has twisted the past in his brain so that he blames the peaceful abbey creatures. He kidnaps the children of Redwall in order to punish them, and the warriors, Jess Squirrel, Basil Stag Hare and Matthias, make chase. They meet up with other creatures and pursue the fox to the ends of the earth. Back home the abbey creatures have their own problems when they are attacked by a group of crows, looking for a retirement home in the warm. They step up and fight their own battles, with a climatic confrontation.