A year has elapsed since the Pevensie children last entered the wardrobe. In Narnia, however, centuries have gone by since the White Witch's defeat. Upon their return, the siblings discover that the land has been devastated and the Narnia they once knew no longer exists. They come to support the young Prince Caspian, who is rallying a group of Old Narnians to fight against his tyrannical uncle Miraz, who dominates Narnia with cruelty. Will they prevail? When will Aslan reappear.
One year after their previous journey, the Pevensie siblings (Georgie Henley, Skandar Keynes, William Moseley, Anna Popplewell) revisit Narnia, only to learn that 1300 years have elapsed there. War has erupted once more, and the children ally with Prince Caspian (Ben Barnes) to dethrone the wicked King Miraz and restore harmony to the land.
The four Pevensie children arrive back in Narnia, discovering that centuries have passed since their reign, during which evil King Miraz has taken control. With the assistance of a brave mouse named Reepicheep and the exiled heir, Prince Caspian, they embark on a quest to overthrow the King, again seeking Aslan's guidance.
A year after their first adventure in Narnia, Peter, Susan, Edmund, and Lucy are summoned back by Susan’s enchanted horn. They realize that hundreds of years have gone by, leading to the rule of the ruthless General Miraz, the uncle of the rightful heir, Prince Caspian, who is currently in exile. The children must locate Caspian and aid him in removing Miraz from power, but they wonder how they will return home afterward.