Masumi Ooshiro's husband, Tsukasa, is reckless with money and has accumulated massive debt. Though Masumi has been a devoted wife supporting him, Tsukasa descends into madness and plots to sell her off to repay his loans. A corrupt loan-sharking yakuza syndicate backs him, offering assistance. When their attempts to persuade Tsukasa fail and they lose patience, the gangsters take matters into their own hands and forcibly abduct Masumi. She falls into the hands of anal fetishists who relentlessly violate her previously untouched anus, brutally ramming thick cocks deep inside. The film depicts her intense suffering and humiliation as she is transformed into an anal slave.