Momodora: Moonlit Farewell presents the account of the greatest calamity to befall the village of Koho, five years after the events of Momodora III. Once the toll of an ominous bell is heard, the village is soon threatened by a demon invasion.

The village's matriarch sends Momo Reinol, their most capable priestess, to investigate the bell and find the bellringer responsible for summoning demons. It is their hope that by finding the culprit, they will also be able to secure the village's safety, and most importantly, the sacred Lun Tree's, a source of life and healing for Koho...