The young widow Reina's life changes forever after losing her beloved husband. She finds herself in a position where she must impart sexual knowledge to the village's young men. In this village, a Showa-era custom still persists—one that once flourished long ago—where youths sneak into the homes of widows to learn the allure of women. Tonight, another virgin youth, still unaware of women, sneaks into the widow's bedroom in search of a new experience.