New instructor Duncan Saint walks into his first cardio class, unaware that students Sara Blonde and Mariana Martix have a secret craving for more than just a workout. They eye his growing bulge, licking their lips as he demonstrates stretches. Duncan catches their hungry gazes, and the room's temperature rises. He asks them to demonstrate, and as they bend over, he can't resist cupping their asses. The class watches, panting, as Duncan's hard cock presses against Sara's pussy through her thin leggings. He pulls out his throbbing member, and Mariana eagerly takes it into her mouth, while Sara grinds on his cock, both students moaning in unison.