Innocent, pretty, young artists - brunette Serena Sterling and redhead Ava Davis - ask their step-bro's - Trey Haze and Elias Cash - to pose for them naked 'cause they don't know how to draw a cock, but, once the guys undress, they decide not just to draw their cocks but to try them as well. So they swap their step-bros and indulge in mind-blowing foursome.