The Chronicles of Narnia: The Lion, the Witch and the Wardrobe

After an air raid during World War II, the Pevensie children (Peter, Susan, Edmund, Lucy) are evacuated from London to the country home of Professor Kirke. During a game of hide-and-seek, Lucy discovers a wardrobe and hides inside, only to find that she has entered a magical winter world. Lucy finds a lamppost and encounters a faun named Mr. Tumnus, who invites her to his home and tells her she is in Narnia. Tumnus puts Lucy to sleep by playing a flute lullaby, and when Lucy wakes up, he explains that the White Witch cursed Narnia to eternally experience winter and never Christmas; any humans encountered are to be brought to her. Tumnus instead sends Lucy home, where she finds hardly any time had passed, and her siblings disbelieve her story due to the normal state of the wardrobe.