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 sabotages Carrie's attempts to start hanging out with her co-workers by scaring them off with several crude techniques. Meanwhile, Spence and Danny realize that women like men who take care of the elderly and start using Arthur as bait.