Cornelius teaches Caspian the sciences and history that his uncle prescribes, but also tells him secretly the true stories of Narnia's past.

When Miraz attacks, Caspian blows the horn, and the kings and queens of old – Peter, Susan, Edmund, and Lucy – are pulled back into Narnia.

Despite his Telmarine bloodline, Caspian is named the rightful heir by Aslan himself, for he is a member of Adam's race from Earth and proved ready to self-sacrifice for beings not of his people.

[2] Order has been re-established in Narnia, and Caspian has constructed the ship Dawn Treader to sail the eastern seas in search of the seven Telmarine lords who had remained loyal to his father and were sent away by Miraz.

When they reach the end of the world, the mouse Reepicheep (who had fought to liberate Narnia in Prince Caspian) goes on to Aslan's Country, described as a blissful paradise.

He had told his people that he wanted to revisit the places of his youth, but many believe that Caspian fears his son is lost forever and has gone on the voyage to seek Aslan to ask who could be the next king of Narnia.

Meanwhile, Eustace and Jill rescue the lost Prince from the underworld where he had been held captive by his mother's murderer, the shapeshifting Lady of the Green Kirtle.

In Walden Media's 2008 release of The Chronicles of Narnia: Prince Caspian, the character is portrayed by English actor Ben Barnes.

Now in his early twenties, Caspian has grown and matured into a wise young man and is on a voyage to find the seven lost lords of Narnia that were banished by his uncle.

After defeating the evil, he is offered the chance to travel to Aslan's Country to find his father, but chooses to stay in Narnia and continue his reign as King.