From the publisher:
Enslaved by the evil ferret King Agarno and his daughter, Princess Kurda, the brave squirrelmaid Triss, along with Shogg the otter and Welfo the hedgehog, plans a daring escape by sea. In her flights, Triss happens upon Redwall, and the abbey creatures discover a new hero in her. Someone brave enough to carry the sword of Martin and face the evil that threatens them.