Prince Caspian -The Movie

The year is 1941. The four Pevensie children, Peter, Susan, Edmund and Lucy,
are waiting for connecting trains at a railway station in the course of
their journey back to their respective boarding schools when they feel
the pull of the magic and are drawn into Narnia and find that more than a thousand years have passed since they reigned there as kings and queens (in The Lion, the Witch and the Wardrobe). They find themselves in the middle of a thick wood at the ruins of Cair Paravel
on a small island at the shores of the Eastern Sea. They go exploring
in the treasury and discover the gifts they received from Father
Christmas. Edmund did not get a gift so he takes a sword; they cannot
find Susan's horn, which she left behind on their last day in Narnia.
They soon afterwards rescue a dwarf called Trumpkin
from summary execution (it was to have been pretended that he had
fallen victim to "ghosts"). Several chapters of back-story follow as
Trumpkin acquaints the Pevensies with the current facts.

Prince Caspian, From Wikipedia, the free encyclopedia