With the Douglases in Washington, the "Haney Farm Mindin' Service" leases out their house (for $4 a day) to a couple with six children. Meanwhile in D.C., Lisa and Eb go to the White House to have unannounced lunch with the president, Kimball causes chaos for the Secretary of Agriculture, and Arnold causes problems in a laundromat. Oliver calls an early end to their trip, forcing Haney to quickly dispose of his new tenants.

A check of their their marriage license revals that Oliver and Lisa aren't husband and wife. They'd been mistakenly given a license to practice dentistry. Refusing to stay in the house with a bachelor dentist, "Dr. Gronyitz" moves in with the Monroe brothers until they can re-tie the knot. Their church wedding goes fairly smoothly considering Hank Kimball is the best man and Ralph Monroe is the maid of honor.