Shiori and Masaru, childhood friends who grew up in a small village, got married. However, in that village, there was an old custom that if a couple didn't conceive after six months, they would be forced to have sex with a "seed-planting god." Masaru is devastated when he sees Shiori being violated by another man right before his eyes. Meanwhile, Shiori finds the sex with the seed-planting god so pleasurable that she goes back to him again and again...