A female student, Shinobu, is dating her teacher, Takuya, and they have promised to marry after graduation. During their last summer vacation, Shinobu visits Takuya's hometown. There, she encounters figures like Shinya, who acts as an elder, along with Takuya's uncles and cousins. She thinks this is just the typical rural family dynamics... However, this village is a den of iniquity where relatives collectively 'sample' women who are to become brides! Shinobu's body is manipulated in various ways. Before she knows it, she blooms into a masochist, actively desiring debauchery...
