History lecturer Keiran and his wifey are looking forth to having their stepson bring his fresh gf over to meet the parents. Unluckily for Keiran, his son-in-law's gf as a manipulative nubile stalker superslut by the name of Evelyn. Turns out that while she was Keiran's schoolgirl, she got to practice Keiran's phat ol' beef whistle, and now she is using his stepson to get some more. Fearful that Evelyn's lollipop-enthusiasm will demolish his family, he takes her to a spare bedroom and pounds her brains out one last time so that she keeps her hatch shut.