Tom goes into a Hot Tub store to get a heater to repair his hot tub, so when the girl behind the counter has got it off the shelf, she seduces Tom, and through a magical spell she transforms Tom into herself, Allison.
Tom is confused from the change, but Allison tells him that she will be back in just a few hours and will change Tom back into himself, and that she just needs to 'take care of something' and assures Tom that it is not illegal and that she would be returning back for her body, which she will put a spell on again and transform them back into their own bodies.
Tom waits all day, and no returning Allison, then Andy, the Hot Tub store owner seduces Allison, and Tom is still wondering where Allison is at, and why she hasn't returned.