When horse-obsessed stepmom Dana Vespoli suspects new daughter Adriana Chechik of researching bestiality sites for a prelaw class, Dana freaks out. She decides to ‘train’ the younger girl using the techniques of a stable hand. Dana saddles Adriana for a perverse ride, probing her tender anus with fingers and a carrot, and employing an enormous, horse-cock-shaped dildo to test Adriana’s sucking abilities before ramming it way up the student’s asshole. Dana’s discipline forges a special intimacy with her eager stepdaughter.