It's been 1 year since the Pevensies (Peter, Susan, Edmund, and Lucy) left Narnia. Their back to being kids and left their kingdom in Narnia, regretfully.
In the train station on their way to school, they are magically transported to Narnia once again. And that's where the fun begins.
The Pevensies realized that they've been gone for so long in Narnia when they saw the ruins of Cair Paravel. They soon found their things in their castle's dungeon and Susan discovered her horn was missing.
They saved a dwarf from two Telmarines and they learned that a Prince Caspian has sought their help via Susan's horn. In time, they met Prince Caspian and together they must stop the evil King Miraz from ruining Narnia; of course with Aslan's help.
Fans and non-fans will enjoy this TCON movie, because Andrew Adamson was still at the helm. Personally, I think he did a terrific job with “The Lion, the Witch, and the Wardrobe”. He should do the other TCON films so as to have continuity in style.