S7, E9: Dr. Goodwin (recurring guest star Jack McBrayer) informs Frankie that she must attend a convention on an all-expense paid trip to Des Moines as part of the dentist office's transition to being part of the Smile Superstars International team, headlined by the company's inspiring founder, Dr. Samuelson (guest star Cheryl Hines). Thinking that her husband could use a break, Frankie entices Mike to join her on the trip to experience the luxuries of a free mini vacation. Meanwhile, Axl informs a disapproving Sue that he's going to move into her dorm room until he finds a new place of his own, and roles become reversed when Mike's dad, Big Mike (recurring guest star John Cullum), agrees to watch over Brick while Frankie and Mike are out of town.