In it, four English schoolchildren, sent away from London during World War II, have arrived in a mysterious manor. During a game of tag, the youngest girl, Lucy, goes to hide in the wardrobe... and stumbles through a portal to the magical land of Narnia, a world trapped in eternal winter by the White Witch. There, she meets and befriends Mr. Tumnus, the faun, before returning to the world on the other side of the wardrobe.
When she tries to tell her brothers and sisters about her adventure, they mock Lucy for her imagination - but then, they find out that she was telling the truth in the most chilling way.