Shinji, the young president of a small parts manufacturing factory, lives a modest life with his wife Nanako, who used to work as the company's clerk. However, there were eyes watching Shinji's apartment. One day, when he returned home late at night as usual, Nanako was gone. While Shinji was filing a missing person's report with the police, a suspicious package arrived. Inside was a video of Nanako being pinned down by Kudo—whom Shinji had previously fired for poor work attitude—and his cronies, showing her transforming into a lewd slut...