While jogging, plump housewives are invited to try a free trial at a personal gym, and they are intrigued and invited to the gym. Clad in ultra-thin leggings, the trainer instructs the women to start with some light stretching. However, the trainer then explains how to effectively train the rectus abdominis and gluteal muscles, and gradually shifts to more erotic exercises! The trainer rubs their slits with a bare thigh massage, and the stimulation of their hairy pussies and slit pussies digging into them makes them confused, asking, "Huh? This is naughty, isn't it?" But they can't resist the pleasure and begin to feel good. Unable to resist, the housewives finally accept raw insertion and even end up with a creampie! Finally, they are handed free invitation tickets, and the shock and pleasure of the experience make them addicted to this personal gym!