Reiko Shimura, transferred from the Kyushu branch to the Tokyo headquarters, begins a new life in the city. While happy about her husband's promotion, their marital relationship has been absent for two months, leaving her in deep sexual frustration. Her voluptuous and alluring body catches the attention of neighboring men. Initially resisting firmly, Reiko gradually finds her resolve shaken by their persistent advances, until she can no longer suppress her own desires. She embarks on a new path as the ultimate next-door fantasy—a neighbor's personal pleasure wife. Where will this turning point in her fate lead her?