Shortly after Matthias sets out again to find the Sword of Martin, he is found by Warbeak and Bigwing who report that Cluny's Horde has begun to construct a tunnel. He breaks off his search and returns to Redwall Abbey to inform the defenders. Foremole easily locates the tunnel, but is unable to determine whether or not it is a real attack or another diversion. Warbeak and Bigwing fly over Cluny's camp to count the vermin forces.