New York lawyer Oliver Douglas quits his job at the law firm of Felton, O'Connell, Clay, Blakely, Harmon, Dillion & Pasteur and buys a farm in Hooterville, sight unseen. The locals are astounded that Haney had managed to unload the place on someone and try to talk him out of it. Laying her eyes on the dilapidated farmhouse for the first time, Lisa bursts into tears.

Lisa gets her first look at their dilipidated--and empty--farmhouse and is horrified. Oily Mr. Haney, who previously owned the dump, took everything with him, including the bathroom fixtures, and tries to resell them to Oliver. Eb, one of Haney's workers, is hired on as their farm hand. Lisa goes out to meet the locals, most of whom have entered a pool wagering on how long the Douglases will stay. Lisa is ready to immediately return to New York, but after a chat with Kate Bradley, she decides to give farm life a try.

Oliver's mother sends the Douglases their furniture from New York, while she also rides down to visit them. While Oliver and Lisa wait for the furniture to arrive, Eunice is stuck with Uncle Joe on his handcar, getting to Hooterville. Things go bad to worse when Eunice finds herself the target of Newt Kiley's bull, and the Douglases' furniture is delivered to Mr. Haney's instead.

Oliver is frustrated because, among other problems, his new plow won't arrive in time for planting season. Uncle Joe has a solution that, naturally, benefits him as well. He charges farmers one dollar each to enter a plowing contest, promising them free lunch and big prizes. This is all news to Oliver as the neighbors on their tractors start descending on his farm.

Oliver has collected soil samples from his farm for the university to analyze. When the samples are accidentally spilled, Oliver's mother siezes the opportunity to get her son off the farm; she mixed the dirt with products from her cosmetics bag.

It's planting time in Hooterville and Oliver is shocked that the locals make their crop choices based on aches and pains. Back on the farm, Oliver assigns every electrical device a number from one to seven in an effort to keep their creaky generator from blowing. All gadgets up to a total of seven can be plugged in at the same time, but Lisa can't quite grasp the concept.

With their phone still not connected, Oliver asks Mr. Kimball to put some pressure on his mother, who owns the telephone company. Kimball says he and his mother aren't speaking, but Oliver convinces him to make up with her. His mom is so grateful, she promptly has a phone installed--on top of a pole outside their bedroom.

Fearful that Mr. Haney will lay claim to Eleanor's calf, the Douglases decide to keep the cow's pregnancy a secret. The Hooterville gossips get part of the story right, except they think it's Lisa who's expecting.

While Oliver tries to recall how long he's been married to Lisa, she flashes back to last year's anniversary which ended with them in jail. The trouble began when a panicked Oliver found corn bores in his terrace garden. His mother, refusing to keep party guests waiting at the Waldorf while Oliver plays farmer, started tossing his "crop" off the balcony. Pots crashing onto the street below did not please the NYC cops.

Oliver is allowed to join the Hooterville Volunteer Fire Department if he'll play an instrument in their marching band. As Chief Joe Carson explains, they have more parades than fires. Patriotic speeches follow as Oliver takes his new duties very seriously.

Ralph Monroe finds herself smitten with Hank Kimball, but discovers that he won't date a woman with a man's name. She asks Oliver to file court papers to have her name changed to something more feminine. While in court, Oliver learns that his license to practice law is not recognized by the state. This sends Oliver back to the books to study for the state's bar exam.

Lisa agreed to try out Green Acres for six months. Today's the day she decides whether to stay in Hooterville or return to New York. Everyone anxiously awaits her decision. In the meantime, Oliver flashes back to their first days on the farm, his physical mishaps around the house, and Haney's lousy products.

Sam Drucker's off for a two-week vacation to visit his sister, leaving Oliver to take over his duties as deputy sheriff. Complications ensue when Oliver demonstrates how to use a pair of handcuffs to Lisa before discovering that he's lost the keys.

The committee to select a new state senator considers Oliver Douglas for the job.

Scheming to get Oliver to pay his way to a convention, Fire Chief Joe Carson appoints him as his assistant. Instead, Oliver finds the Hooterville Fire Department to be inept and ill-prepared. Oliver's call for improvements results in Uncle Joe being voted out and him being named the new chief.

After Joe Carson quits as head of the Hooterville centennial celebration, Oliver gets the job. His idea is to stage a re-enactment of the town's founding starring he and Lisa as Horace and Doris Hooter. In the dramatization, saloon girl Doris fleeces Horace out of the money he'd hoped to buy a farm with. Eventually, he gets his money back, thanks to her skills as a card shark, and they marry and settle Hooterville.

Oliver loses all hopes of getting rid of his mother-in-law when Mr Haney and Uncle Joe Carson vie to become his father-in-law.