 The Narnians raid Miraz 's castle , but Caspian ruins the plan by freeing Cornelius instead of opening the gate . He learns that Miraz killed his father , and confronts Miraz but is wounded . Overwhelmed , Peter calls for a retreat . Peter , Susan , Edmund , Caspian and the Narnians escape with heavy losses . Upon returning to Aslan 's How , Peter and Caspian argue , while back at the castle , Miraz is crowned King . 
