Eager but accident-prone young executive Tom Stansfield (Ashton Kutcher) has finally happened upon the opportunity of his lifetime: he can impress his megalomaniac boss and the boss's luscious daughter, Lisa (Tara Reid), by simply house-sitting their lavish mansion for one night. It's a plan that could lead to love and success, if only THE GUESTS didn't keep arriving. One by one, a barrage of wild and crazy visitors take over the house he's supposed to be watching and turn it upside-down, as well as inside out.