Kindaichi and his friends head toward a hot spring, but they lose their way and arrive at a dilapidated, ominous hotel. Rumors say a vampire once inhabited the building. Earlier, a victim was discovered dead with bite marks on the neck, and six years prior a girl was found in the cellar bearing similar marks before the villagers killed her. As the story unfolds, one of the guests is murdered and Miyuki is attacked by a fang‑laden creature, suggesting the vampire may still roam the premises.