Even though Eric went to Africa to teach, Red and Kitty still have a houseful of Eric's friends. Kitty decides to make a tape for Eric to tell him what has been going on since he has been gone. Also, Hyde comes home from Las Vegas with a surprise!
Hyde finds out that Leo has wrecked his record store while Hyde was in Las Vegas.
In honor of Hyde's new married status, the guys decide to throw him a belated surprise bachelor party. But when Kelso gets distracted by a new ice cream girl, the guys are the ones left out in the cold. Meanwhile, Jackie questions Donna's loyalty after Donna befriends Hyde's new stripper wife.
As Red and Kitty celebrate their 25th anniversary, Kelso gets bitten by the marriage bug and decides to propose to Jackie. But Vic (guest star Willis), a sketchy fast-talker with a bad toupee, makes Kelso a job offer he cannot refuse. Meanwhile, Donna is disappointed that Eric hasn't reached out and touched her from Africa.
Hyde's new wife Samantha, a former stripper, tries to help Kitty and Donna spice up their relationships. With Samantha's expertise, Donna takes some 'creative' photos of herself to send to Eric, but unfortunately they end up in the wrong hands. Meanwhile, Fez quickly learns that living with a girl may not be as great as it seems.
When Donna and Randy spend more time together, Fez and Jackie suspect that there's more going on than just a friendship. However, the foreign friend and his sidekick sleuth quickly learn their lesson when their poor detective skills get them into trouble. Meanwhile, Red gains a newfound respect for Leo.
The gang is bored hanging in the basement, so Randy spices things up by taking everyone out to the local burger joint. But after the grumpy owner causes them grief, Randy seeks revenge by stealing the restaurant's mascot, Fatso the Clown. His idea is a hit until the stolen clown stunt turns into a circus act for the gang.
Fez meets a promiscuous older woman at the salon who is interested in more than just a blowout. But when Kitty realizes that Fez is dating her friend, tension mounts as Kitty's disapproval gets personal. Meanwhile, while searching through Donna's room for gift ideas, Jackie reads about Donna's new secret crush.
When Jackie floods Fez's apartment, Fez almost gets evicted and gives Jackie an ultimatum: stop her freeloading ways or pack up her bags. In an effort to make it up to Fez, Jackie wins over their eccentric landlord ? and convinces him to let them keep the apartment ? by sharing her passion for fashion and going shopping with him. Meanwhile, the honeymoon is over for Hyde and Samantha, who get into some heated arguments that warm up Red and Kitty.
At the salon, Jackie meets local celebrity talk show host Christine St. George and is determined to get a job on her show 'What's Up Wisconsin.' However, after she finally lands a job as Christine's assistant, Jackie's start in showbiz isn't at all what she expected. Meanwhile, Donna questions Randy's intentions and Hyde gets a lesson on marriage.
Jackie's new job at the station keeps her on edge as she assists psycho boss Christine St. George. Frustrated with Christine's attitude, Jackie tries to win her over with some of Kitty's homemade brownies. Luckily, Jackie's plan works and Christine lightens up, but when Jackie claims the recipe as her own on live television, Kitty is the one who freaks out. Meanwhile, Leo has a crush on Donna.
Red lets Hyde in on a Valentine's Day secret, Christine opens up to Jackie about her love life, and Randy has big plans for a date.
As things heat up between Randy and Donna, the gang discovers their growing relationship despite Donna's efforts to keep it a secret. But when Kitty insists that Eric and Donna are meant to be together, Donna questions whether dating Randy is the right move. Meanwhile, Fez tries to impress the ladies by creating a new persona at the salon and gets a little help from smooth '70s icon Isaac Hayes.
When Hyde's father asks him to housesit while he's out of town, the gang convinces Hyde to throw a party. But when things get out of hand and they accidentally break a signed Peter Frampton guitar, Hyde has some explaining to do. Meanwhile, Kitty uncovers the real reason she's upset Donna is dating Randy.
On their way back from the county fair, Fez accidentally throws Kitty's wedding ring out the window. Frustrated, Red takes Kitty home and leaves the kids in the woods to find it. Donna and Randy try to get some time alone, while Fez separates from the group and finds a new fishy friend. Back at home, Red reveals the truth about Kitty's ring.
When Samantha's real husband shows up unexpectedly, Hyde learns that his marriage is null and void. Jackie is tired of being single so she creates a list of ideal qualities she wants in a man, only to realize her prince charming is right next door. Meanwhile, Red loses business when a big automotive store opens in town, so he decides to sell his shop and retire.
When Jackie realizes she has feelings for Fez, she turns to Donna for help and sees a therapist for love advice. After the doctor tells her she is only interested in unavailable men, Jackie is relieved ? until Fez gets dumped and she's still interested. Meanwhile, Hyde tries to keep Red busy with fix-it projects until his plan backfires when Red embraces retirement.
At Hyde's rocker bonfire, Jackie tries to win Fez's heart by bonding over their shared love for disco. But even though Fez leaves a make-out session with a girl to help Jackie prevent the disco inferno, it will take more than music to make him realize they are meant for each other. Meanwhile, Kitty and Red learn that their new neighbors are gay, but it's not their lifestyle that Red disagrees with.
Fez's lifestyle as a ladies' man tortures Jackie until he decides to settle down with one woman - crazy Caroline - which forces Jackie to confess her love for him. Will Fez reciprocate her feelings? Meanwhile, Hyde convinces Red to sell his heart medication.
When Jackie declares her love to Fez and gets turned down, she makes his life miserable until Fez fights back in an all-out war. But when words are exchanged and Fez takes it too far, Jackie isn't the only one who gets hurt. Meanwhile, Bob decides to sell his house and move to Florida, which sparks some life-changing decisions for Donna.
A friend of Fez's visits and tries to bring him back home since he is so heartbroken over Jackie. Hyde's father has some bad news for him.
It's the end of an era and what better way to end That 70's Show then to bring in 1980. Everyone gathers at the Forman's for a New Year's Celebration that no one will ever forget.