The earnest girl, invited to play by the dazzling girl who reigns over the school hierarchy, excitedly followed her to a dirty one-room apartment. There, waiting was... an unknown middle-aged man!? The serious girl is sold by the dazzling girl for money and forced to have sex with the middle-aged man! While being embraced by the seemingly unclean middle-aged man, the dazzling girl, counting money and making another appointment on the phone with a different middle-aged man, watches as the earnest girl descends into a deep darkness...