We asked the popular actress Haruki Sato to carry out an investigation. The investigation involves Haruki Sato Sato carrying a camera and going undercover to investigate the so-called underground sex industry. Usually, she has sex on a clean bed, but in this film, you can see Haruki Sato struggling in a dirty and suspicious atmosphere. Haruki Sato infiltrates all kinds of suspicious sex industry and puts her body on the line! Will she be able to complete this mission safely?