Ed is a very opinionated 72-year-old who is divorced three times. His two adult sons, Henry and Vince, are habituated to his unsolicited and often politically incorrect rants.

Henry, a struggling writer and blogger, is forced to move back in with his father Ed when he can no longer afford to pay his rent. This creates new issues in their tricky father-son relationship.

Henry finally lands a job after weeks of unsuccessful job search as a writer, mostly due to the lack of good material. During the interview, Ed interrupts with an irrational phone call that sparks the interest of the eccentric editor conducting the interview. Henry is ultimately hired, but is forced to continue living with Ed in order to be able to continue to write about his father's unsolicited rants, hence the title "$#*! My Dad Says".