A couple who have been together for a long time and are in a rut. In order to overcome this situation, her boyfriend proposes to her a threesome involving a man she doesn't know. Naturally, she refused, but she gave in to her boyfriend's push and decided to meet the man she found on the website at a hotel. Her body and mind gradually relax with the man's gentle and experienced skinship massage. She was in front of her boyfriend filming her, and she couldn't help but feel it.