Life’s good for deliveryman Doug Heffernan, until his newly widowed father-in-law, Arthur, moves in with him and his wife Carrie. Doug is no longer the king of his domain, and instead of having a big screen television in his recently renovated basement, he now has a crazy old man.
Doug and Carrie watch Deacon and Kelly's kids while they are out of town. When one of the kids sees them making love, they must keep him from telling his parents...