Only widows dressed in black may participate in the "Widow Auction." Pure-hearted widow Mei Kurose, clad in mourning attire, is humiliatingly dominated by a man who arrives to collect her late husband's debt. Drawn into a twisted situation, she is forced to sell her young, sensitive body. Bid on by a wealthy college student, she is tormented with sex toys, driven to consecutive orgasms, then surrounded by three laborers who cum all over her beautiful face, overwhelming her with her own repressed desires. To make matters worse, her brother-in-law—who secretly harbors feelings for her—discovers the truth, plunging Mei into an even deeper descent of forbidden pleasure and shame.