Phil (Seth Gamble) arrives home one day to find a strange girl, Tracy (Jane Wilde), claiming he's her parent. Phil is shocked and confused but grows even more disturbed when his wife, Nancy (Charlie Forde), seems to be playing along. It's revealed that Nancy orchestrated a swap with another household so that Phil could live out his daddy/stepdaughter porn fantasies, which she discovered in his internet history. Phil is shocked and repulsed, and storms off. Tracy is saddened but Nancy assures her that Phil will come around... Multiple times later, Phil is lured in to have family moments that include Tracy, although he's not very happy about it. He's even more conflicted when there are growing hints of Tracy trying to seduce him, knowing it's part of his secret fantasy. Phil keeps trying to deny his twisted urges, wanting to keep his fantasy just a fantasy in his head, but it becomes harder and harder to resist... One night, as Phil is lying in bed, Tracy enters the room and climbs into bed with him, claiming to have just had a nightmare. Her real intentions, however, are to fully seduce Phil once and for all. She starts to cuddle into him and fawn all over him, trying to win Phil over. Although Phil is initially hesitant, his resolve finally crumbles as he gives into the part of him that he'd been denying the entire time. But little does he know, his sneaky wife Nancy still has one more thing up her sleeve.
