Oscar and Felix try to change "plain Jane" Myrna, into a raving beauty after discovering her boyfriend had left her.
Oscar is sure that his bowling team will win the championship after Felix agrees to become a member. But a strained back while exercising may change the outcome.
Felix's son Leonard, desperately wants to win the upcoming frog jumping contest. But when Oscar is left to frog sit, Leonard's leaper apparently leaped out the window of their apartment. Not only do they need to find Leonard a new frog, but they need to teach it to be a great jumper.
Oscar lands a bit role in a Hollywood movie, and he brings Felix along to Los Angeles. That maybe a big mistake because Felix appoints himself as Oscar's agent and gets him fired.
Felix finds himself in court after he smuggles a famous dog away from its owner during a photo shoot after seeing him being abused.
Oscar finds himself in debt to the owner of the Texas football team after losing in poker. Felix comes to his aid by promising he can get him a band for his hoe-down.
Felix is concerned about the cities playgrounds and tries to convince Oscar that he should run for city councilman. At first Oscar was skeptical about the idea but soon throws his own hat into the ring.
Oscar's article concerning how mean and unfriendly New Yorkers can be, upsets Felix. So when the subway shuts down, Felix makes an attempt to prove him wrong.
When Felix refuses to let his daughter Edna, to attend a concert by her favorite performer, Paul Williams, she decides to run away and follow him on the road.
Felix recalls a story he was told by his relatives from Chicago concerning a time when Oscar's father was scheduled to kill Felix's father.
Reluctantly, Oscar allows Felix to help him boost his ratings on his radio program by writing a script for the greatest moments in sports history.
Oscar falls in love with an attractive widow and her two kids. Felix believes he should ask for her hand in marriage, but their friends bet that the marriage may never happen.
Oscar is asked to fill in for the theater critic while he is on vacation. Oscar gives Felix his tickets and then asks for a detailed review after the show. Felix is unaware that Oscar has become a hit at the newspaper using his critiques.
Oscar is given a chance to sit in as an announcer of Monday Night Football, despite his feud with Howard Cosell, the lead announcer. Wanting to look clever, Oscar hires a man to write him some insults towards Howard, which go over poorly.
Oscar finds a new contact for his racing tips, and when he begins winning, Felix wants in too.
Oscar old Army buddy comes for a visit. When Felix discovers he plays the violin, he decides to help the prankster virtuoso become a serious musician....and boring.
Felix offers to manage a rent strike for the other tenants of their apartment building. His negotiations go well and the management agrees to give in under one circumstance...Felix must move out.
Oscar finally gives in and agrees to have an operation on his sore throat. But he will need to keep silent for two weeks, which ends up making Felix's throat sore.
Felix is in a lurch when his overweight model walks out on him before his photo shoot for a weight reducing book. Oscar is asked to don a fat suit in the models place.
Felix meets up with an old ex-girlfriend and discovers that she is now a grandmother, which makes him feel old. To prove he still has some life left inside him Felix convinces Oscar to go to a discotheque with him.
Oscar is invited to appear on a TV show with comedian Richard Dawson. Felix believes that his one chance to become a star on TV was killed by Richard years earlier.
Felix is convinced he has changed and wants another chance with Gloria. He will even go as far as sleeping in Oscar's room to prove he is no longer a neat freak.