Two close friends, married women Una and Rio. Una's husband is a dumb jock with a dick, while Rio's husband is an intellectual with a dick brain. Although both are satisfied with their sex lives, at Rio's suggestion, they decide to swap husbands... And on the day itself, a swapping session with four people at the peak of sexual excitement. A serious battle to see whose dick is better (for real)! "My husband's dick is the best, no doubt about it...!"
