Following an earthquake in an unnamed prefecture of Japan, a fault is discovered on Amigara Mountain, very close to the epicenter of the quake. On the slopes of the mountain, two hikers meet; a man named Owaki and a woman named Yoshida. The former assumes that they are both here to see the fault, which has captured the attention of the global press. Following the sound of voices to the fault, the two of them marvel at the strange sight before them: countless human-shaped holes in a rock face exposed by the earthquake.
Scientists examining the holes announce that there is no way to find out how deep into the mountain the holes go. They can, however, determine that the holes are not natural and must have been dug from the inside out. The accumulation of soil over the centuries eventually sealed up the entrances, but they have no way of knowing why the holes were made or who would have the technology to do it, especially since they appear to be thousands of years old.
Owaki is distracted from the speculation when he notices Yoshida looking for something. She explains that she came because she saw something on TV: a hole that she swears was her exact silhouette. Ever since she laid eyes on the hole, she has had a strange feeling that it was meant for her to enter. Owaki is skeptical, but another man called Nakagaki overhears and says that the same thing happened to him. Most of the people who have come to the mountain are looking for their own holes. Nakagaki reveals that he has finally found his own hole, removing his clothes and disappearing into it before Owaki can stop him.
