When faced with the overwhelming pressure of a massive lottery win, Kazura Shino seeks solace in his father's secluded mountain retreat. While exploring the property, he stumbles upon a hidden passageway that leads him to the poverty-stricken village of Grisea in a parallel world. Motivated by compassion, Kazura uses his newfound wealth to revitalize the village, sparking hope and prosperity. However, his presence mirrors an ancient legend of Greysior, the god of harvest, whose aid led to tragic consequences. As rumors spread of Kazura's resemblance to Greysior, the village anticipates external threats seeking his intervention, blurring the lines between myth and reality.