The second season begins with Helen complaining about never getting to take a vacation. To keep her quiet, Stanley prepares a secret disco birthday party with the aide of former tenents, Jack Tripper, Janet Wood, and Chrissy Snow. Janet and Chrissy arrive to teach Stanley how to disco. Janet quickly goes and takes a shower. Meanwhile, Chrissy is showing Stanley how to disco. Unknown to them is that Jeffrey is spying on them. When Janet comes out in a towl, his suspricions seem to be confirmed, and they are that Stanley is cheating on Helen. Also, Jack is put in charge of food and drinks. The party goes off with only one hitch-Helen hasn't arrived from her art class lessons! Stanley than calls the art class, only to find out she hasn't been there all night. As Stanley is trying to figure things out, Helen enters the room looking terrible. Helen explains how she stopped for gas and accidentally got locked in the rest-room when the station manager closed for the night. To add to her humil

A man shows up at the condo and introduces himself as Stanley's son from an affair years ago.

When the electricity to the Roper's house is cut off when Helen's sister is supposed to come for dinner, Stanley ""borrows"" electricity from the Brookes.

Stanley fears that Helen will ignore him if they adopt a child. But when a social worker says they're to old to adopt, he raises her sprits by giving her Muffin, a dog.

Stanley and Jeffrey get drunk and are arrested after both have arguments with their respective spouses.

Stanley loses their dog and buys another one to try to calm Helen down.

On their 23rd wedding anniversary, Stanley buys a fake antique clock which happens to resemble the Brookes clock which was stolen. Helen then tries to sneak into the house to return the clock.

When Ropers' kitchen is accidently set on fire by Mr.Roper, Brookes thinks it's his fault and lets them stay with his family.

When Stanley gets a new (Or So He Tells Helen) living room suite from his friend Joey and gets his old furniture hauled away, he finds out the furniture once belonged to Helen's sister, Ethel

The Brookes and Ropers fight over commision money Helen gets when she sells one of the townhouses to a buyer, the Brookes decide to buy her something--an organ!

Jeffrey's hobo uncle comes for a visit.

Helen creates a phony lover named Roman to make Stanley jealous.

The Ropers find out that a 18 year old girl has been living in their store room for weeks

Stanley pays Brookes' nephew $50 to take Jenny out on a date.

Ethel attempts to retrieve a valuable horse-shaped vase from the Ropers.

The Ropers and Brookes feud on the David and Helen's birthday.

Helen thinks Stanley is cheating on her.

Stanley takes David to a Poker Game while babysitting him

Stanley is jealous when Helen's old boyfriend wants to see her.

Stanley's men's magazines are accidentally donated to a church rummage sale.

When Stanley goes over to his brother-in-law's (Hubert) office to get a job, he finds two tickets for Hubert and his secretary to Acapulco.

Mother Roper holds a wake at the Ropers' house to discuss her will, complete with presents