The Chronicles of Narnia, #4: Prince Caspian
NARNIA ... the land beyond the lamp-post where wondrous things happen, where the Lion returns ... where a battle is about to begin.
An evil king sits on the throne of Narnia, forcing all the Talking Beasts and mythical creatures to live in hiding. The rightful king, the young Prince Caspian, fights desperately to regain his throne and save his people. But when all seems lost the Great Lion, Aslan, calls peter, Susan, Edmund and Lucy, four heroes from another world, to join the battle to free Narnia.