In a remote village deep in the countryside, where depopulation continues to worsen, Mana Iwashita was born and raised as the last remaining woman. Since her youth, she has used her body to keep young villagers from leaving. But as she ages, her strength begins to fade, and by the time she reaches 50, both her body and spirit are utterly exhausted. Just then, a corrupt developer appears with plans to destroy the village and turn it into a resort, bringing a new crisis to her life.