A husband with a desire to be cuckolded that he can't tell his wife applies to SOD. Three young couples are invited to a hot spring trip. The moment the husband leaves his seat at the mixed-bathing hot spring, the couples around him suddenly start making out... showing off their erect dicks! A vibrator experience that makes you feel good in the souvenir corner! In the end, even though her husband is next to her, the wife gets aroused by the massage and suppresses her voice to accept another man's dick!