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.
When the partners of Carrie's law firm notice Doug's softball skills, they ask him to pretend that he's a lawyer in order to play on their company team. Carrie worries that Doug won't be able to pull off being a lawyer, but he is so convincing, an opposing firm offers him a job. Meanwhile, after tracing his ancestry, Arthur believes his great-grandfather was a slave owner and makes it his own personal mission to correct things with Deacon on his ancestor's behalf.