Tyler Cruise, home alone with stepsister Maria Kazi, discovers her secret stash: a hyper-realistic sex doll that's her doppelganger. Intrigued, he plays with it, feeling its lifelike curves. Maria catches him, mortified, but Tyler's curiosity piqued. He offers her a chance to watch him fuck the doll, mimicking what he'd do to her. Maria, secretly turned on, agrees. Tyler starts slow, licking the doll's pussy, then rams his cock in, making Maria gasp. She can't help but touch herself, joining their taboo threesome.