Gdy Keiichi przybywa do wiejskiej miejscowości Hinamizawa, odkrywa, że doszło w nim do serii morderstw. Jednak nowi znajomi nie chcą z nim na ten temat rozmawiać.
After losing a bet, Keichi, Mion, Rena, Satoko and Rika parade around the town in costumes. When they come to a fork in the road, they decide to go to Yagouchi, a nearby abandoned village. Once there Keichii and Rena learn the mystery of a strange haunted quarry as they debate whether or not to check it out.
The story is set in the same Hinamizawa village as the previous stories, but in this OVA, the village has been completely sealed off due to a mysterious virus in 1983 and Maebara Keiichi and Ryuuguu Rena must deal with the outbreak.