Asuna, a girl raised in the mountains, lives with her mother. One day, she hears a mysterious song from a crystal radio, a memento of her father, and becomes captivated by it. Around that time, she meets Shun, a boy from the underground world called "Agartha." They connect with each other, and Shun shows her the wonders of this world, but then suddenly disappears. Asuna longs to see Shun again. Before her appears Shin, a boy who looks exactly like Shun. Then, there's Mr. Morisaki, Asuna's teacher, who seeks Agartha, yearning to reunite with his wife who died young. The door to Agartha opens before them. With their own desires in their hearts, the three embark on a journey to the legendary land... Thank you for your consideration! #lain movie