We pick up couples on the street who seem to be in a slump in their relationship (sorry). We invite only the boyfriend over and persuade him by saying, "Why not teach her the new joys of sex?" If he agrees, we invite him into the studio! We also have the girlfriend of another couple who was brought along for the first time perform lesbian sex! The boyfriend is grinning as he watches the monitor in another room... but gradually, she transforms into a sexy one. Hmm, does she look better than usual? The boyfriend is flustered. "My girlfriend was seduced by another woman..." He is speechless! Frustrated! Raging! Intertwining human relationships! 6 couples appear!