Marta Sanz, a busty Spanish amateur, makes a naughty wager with her friend Jose Casto. If she can resist fucking him while he watches, he'll pay her handsomely. But the game changes when she decides to call him while she's with another lover, riding him cowgirl-style. Her big tits bouncing, she blows her partner in doggystyle, all the while taunting Jose with her moans and dirty talk. Can she keep her promise, or will the thrill of exhibitionism and the delicious taste of her lover's cock be her undoing?