Lanlan, who is too greedy for sex, proposes wife swapping to her female friend. She seduces her female friend's husband by showing him her plump lower body, and when he witnesses her friend and her husband having sex, she says, "I have to get revenge," and sucks on his erect cock. Unable to resist the vibrator foreplay, Lanlan gets excited and shows off the insertion part of the other man's cock in front of her friend and her husband. Covered in sweat, she takes her husband's cock in her mouth and gets fucked from behind by the other man's cock, shaking her ass and moaning in ecstasy.