 1 @,@ 300 Narnian years after the Pevensie siblings left , Caspian , a Telmarine prince and heir to the throne , is informed by mentor Doctor Cornelius that his uncle , Miraz , is plotting to kill him and seize the throne for himself and his newborn heir . Cornelius gives him Queen Susan 's ancient magical horn , instructing him to blow it only at his greatest need . Caspian flees into the woods where he encounters two Narnian dwarfs , Trumpkin and Nikabrik , and a talking badger named Trufflehunter , and blows the horn to summon help . 
