When Elaine is sent away from home during World War II, she finds herself living in a mansion with four other children, all of whom are siblings. Elaine, feeling isolated, immediately clashes with most of the Pevensie children and longs for nothing more than to return home to her mother.
However, on one fateful day, the five of them stumble through a wardrobe and find themselves in the magical world of Narnia. They learn of a prophecy that tells of two boys and two girls destined to save the land from the evil White Witch. Elaine realizes to her shame that she is not part of the prophecy and therefore, not needed or wanted.
Her plans to return to the mansion are derailed when Edmund betrays them all to the White Witch, and whether she wants it or not, she is now along for the journey as they try to find the mysterious Aslan who is the only one who can save Edmund from the Witch's power.
As Elaine and the Pevensies fight for their lives and the lives of the friends they make along the way, Elaine and Peter find solace in one another as the eldest children and learn how to rely on each other instead of facing everything alone. But just when things start to make sense again, everything is thrown into chaos and Peter and Elaine must risk everything to keep Narnia from falling into the hands of the Witch.