Brave young ottermaid Tiria Wildlough's intriguing, spirited quest is at the center of the 18th heart-stopping adventure in the bestselling middle-grade Redwall epic. The combination of prophetic dreams, a desire to become a warrior, and the courageous rescue of a bird from a vicious gang of water rats spurns Tiria to leave Redwall Abbey and strike out for Green Isle, where otters are enslaved by vicious cats.