The story tells that a 17-year-old girl, Suzuki, who lives in a farmhouse in Kyushu, Japan, met a young man who set out on a journey in search of a "door". Following in the footsteps of the youth, Lingya came to a ruined place on the mountain, where an ancient door stood quietly, as if it were the only relic left in the collapse. Lingya seemed to be attracted by something and held out his hand to the door. Soon after, doors all over Japan began to open one by one. It is said that the open door must be closed, or disaster will befall the world from the other side of the door.