The Belcher family goes down to Florida to see Linda's parents in their senior home. To their surprise, they find that the home is full of swingers. Meanwhile, the kids go to find a snake that allegedly ate one of the residents' dogs.
The Belchers are going on a family road trip vacation to visit Linda's parents in their Florida retirement village while the restaurant is being fumigated. Bob is apprehensive, while the kids are excited about the village pool. After deriving al the way, Gloria and Al are not as excited and Gloria tries to talk Linda out of attending a potluck that night, and tells Linda about other activities like a wine tasting, which Bob and Linda agree to. At the Wien tasting, Bob and Linda are happily drinking while Gloria says that there's something Linda should know. That the seniors are more "active" there than in other places. Bob quickly looks arid and notices the seniors being extremely close with each other, and a homemade weaving saying "It Don't Mean A Thing If It Ain't Got That Swing." he quickly realizes that the old folks are all swingers, and tells Linda to her shock.
After a tour where the Gennaros point out to the Belchers how "into it" all of the resident couples are, Bob finds it hilarious while Linda is disgusted and asks why her parents did this. Gloria explain that they felt the other condo villages were all old people waiting to die but there the people are alive. They thought to give swinging a try, but Al got cold feet after moving there. Linda is upset because she does not want all the old horny people near her parents and the image of a bunch of old naked people all in a bunch disgust her while Bob still finds it funny and plans to tell everyone when they get home. That evening, another couple arrives to give Linda's parents a Notice of Failure to Perform, stating that since they have not participated in two other events and RSVP'd no the potluck that night, they will be kicked out.
Linda tries to cheer her parents up by saying they can find another community, but Gloria reveals that if they get kicked out, they will have to forfeit their down payment, and thus cannot afford even an apartment. Linda suggests that the two move in with the Belchers, to Bob's horror. In private, he points out that their apartment above the restaurant is already a cramped one-bathroom with three kids, suggesting Gayle's place, but Linda says it's a studio apartment and not another word; if they get kicked out, they're staying with the family. Bob then gets an idea, and goes out to the porch to privately talk to Al. Al admits that at the parties all the other guys are "peacocks" while he's the last "breadstick", but he cannot take any "breadstick" pills due to his bad health. Bob tries to find out what else gets Al going, such as possible fetishes. Al sheepishly reveals that balloons are his thing, specifically watching women inflate balloons and then sitting on them to pop. But Gloria doesn't know, and she also is extremely sensitive and startled by loud noises.
As Linda imagines in disgust the community pool being used for orgies, Bob goes back inside to talk to Gloria I the kitchen. Bob reveals Al's secret kink, and also asks if there are any earplugs or headphones she can use (and food, since it's a potluck). Linda asks where they are, before the two emerge in bathrobes for the party. Linda asks Bob what is going on , and he explains that he got Al into the swing fo things, her parents are going to the party, and eh sees himself as a hero. Linda is furious that he got her parents to go to a sex party where they can be "passed around" and get STIs. However, the two look out on the porch and see Gloria and Al kissing for the first time in 20 years. Linda admits that if you love something, you let it go swing.
The kids are ready to go to the pool but find it emptied for cleaning, and fear their vacation is ruined. However, they encounter Helen Kellerman, an old lady in leopard-print pants, who has been sitting by the woods watching for a python she thinks took her beloved tiny dog Bitsy. Gene is terrified, and Helen reveals she is trying to catch the python on video to prove to the condo association, but she cannot walk as well, but the kids could go in and film it. Gene is adamant not to, while Louise agrees after Helen offers them a hundred dollars. The kids research Burmese pythons, seeing that they do exist all over the state, and Gene still refuses to go along and wants to stay behind. That evening, the kids go camping in the woods (with Linda's encouragement) as Helen goes back home. Louise and Tina go into the wooded area with the camera while Gene stays in the tent. After Louise tricks Tina by saying there is either a feather or a scorpion on her back, Tina panics and knocks away their flashlight. Lost in the woods, Louise tries to get Gene's help over the walkie-talkies, but he is unhelpful. The sisters accidentally walk into a mud hole and start to sink, but Gene does not believe them and turns off the walkie-talkie. As the two yell for help in the distance, Gene at first cowers, then drives a golf cart from one of the resident's into the forest to rescue his sisters. However, an alligator gets on the cart, forcing them to run back. While running, they find a tree trunk with tutu scraps, and soon Bitsy emerges from the woods alive and well.
The kids return Bitsy to Helen, who is ecstatic at seeing her dog alive. However, when she brings out the little dog costumes, Bitsy runs off and Tina notes that bits seemed happy in there without the dog clothes, and Helen reluctantly allows it. The next day, expended from all that has happened, the Belchers leave and begin to drive back. The kids wonder who the other couple was eating breakfast with their grandparents were, Linda half-heartedly explains it's the Madisons (and Mr. Madison was sitting on Gloria's lap). Bob asks if they heard the party the previous night, with Gene and Louise complaining that they should learn to throw potlucks without balloon popping, and Tina adds "without having really loud sex." In the woods, Bitsy is seen cuddling with the python Helen saw.