On September 23, 2000, a certain thread was created on a giant internet forum.

Thread Title: "The cliff opposite Narutoge has collapsed, revealing what looks like a tunnel?"

Amid various speculations, the protagonist heads to the site, bearing the expectations of the thread's original poster and others, to uncover the truth. There, at the cliff that had collapsed due to a typhoon, was a hole resembling a tunnel. Passing through the tunnel, the protagonist finds utility poles, a security post, and clear signs of human presence. Beyond that lies... the village of Narutoge, which is not on any map. The moment the protagonist steps into the village, an old bridge collapses, cutting off the way back. To escape from Narutoge Village, the protagonist begins to explore. As the truth of Narutoge Village gradually comes to light, will the protagonist be able to safely escape from Narutoge Village!?