I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: The NeverEnding Story Movie plot: Bastian Balthazar Bux is a shy and friendless bibliophile 12-year-old, teased by bullies from school. On his way to school, he hides from the bullies in a bookstore, interrupting the grumpy bookseller, Mr. Coreander. Bastian asks about one of the books he sees, but Mr. Coreander advises against it. His curiosity piqued, Bastian seizes the book, leaving a note promising to return it, and hides in the school's attic to read. The book describes the world of Fantasia slowly being devoured by a force called "The Nothing". Fantasia's ruler, the Childlike Empress, has fallen ill, and Atreyu is tasked to discover the cure, believing that once the Empress is well, the Nothing will no longer be a threat. Atreyu is given a medallion named the AURYN that can guide and protect him in the quest. As Atreyu sets out, the Nothing summons Gmork, a vicious and highly intelligent wolf-like creature, to kill Atreyu. AURYN, based on the Ouroboros, representing infinity/eternity. The original prop is now owned by Steven Spielberg.[5] Atreyu's quest directs him to the advisor Morla the Ancient One in the Swamps of Sadness. Though the AURYN protects Atreyu, his beloved horse Artax is lost to the swamp, and he continues alone. Later, Atreyu is surprised by the sudden appearance of Morla, a giant turtle. Bastian, reading, is also surprised and lets out a scream, which Atreyu and Morla appear to hear. Morla does not have the answers Atreyu seeks, but directs him to the Southern Oracle, ten thousand miles distant. Atreyu succumbs to exhaustion trying to escape the Swamps but is saved by the luckdragon Falkor (voiced by Alan Oppenheimer). Falkor takes him to the home of two gnomes that live near the entrance to the Southern Oracle. The gnomes explain that Atreyu will face various trials before reaching the Oracle. Atreyu proceeds to enter the Oracle, and is perplexed when one second trial, a mirror that shows the viewer's true self, reveals a boy which Bastian recognizes as himself. Bastian throws the book aside, but after catching... My question: What is the primary purpose of Atreyu's Journey?
A:
To save the Empress.