Mork, a misfit on his own planet because of his sense of humor, has been sent on a mission to observe Earth's more primitive society and report back telepathically to his leader, Orson.
Mork, too unfamiliar with Earthling ways to go out on his own, moves into the attic of Mindy's apartment over the outraged opposition of her old-fashioned father.
Mindy is hurt when her date Brad misconstrues Mork's living in her apartment and walks out--like her other boyfriends.
Mork does not understand the meaning of love, since emotions have been done away with on Ork. After asking for information and advice from Mindy, Cora and Eugene, Mork falls for a shapely blonde.
Mindy's old rival, Susan Taylor, decides to get back at Mindy for stealing her high school boyfriend by seducing Mork.
Newspaper reporter Clint Mullet believes Mindy is his ticket to fame because he thinks she can supply him with proof that aliens exist on Earth.
Mork believes that humans are honest because Mindy lectured him on "splinking", his Orkan word for lying.
Mindy tries to convince Mork that people are taking advantage of him because he believes anything he hears.
Mork learns the human facts of life when he meets Mindy's friend Sally, who is expecting her baby soon.
With the enraged town bully hot on his heels, Mork remains resolutely non-violent in keeping with his Orkan ways, and is baffled by the efforts of Mindy and Frederick to give him a quick education in Earthling self-defense.
When Mindy's grandmother Cora gets the blues because yet another of her old friends has died, Mork decides to cheer her up by using his Orkan aging machine on himself and flirting with her as an old man.
Discovering that Christmas is a season of caring and sharing, Mork wants to invite Mindy's fair-weather friend Susan to join the McConnell Christmas celebration.
After finding out that three votes are needed to break a tie, Mork invites a young Russian immigrant named Sergei to live in Mindy's apartment.
Attempting to be tolerant of the grouchy downstairs neighbor, Mr. Bickley, Mork attempts to cook him dinner with comically disastrous results.
After one unsuccessful attempt to run away from home, young Eugene meets Holly Tyler, who's not only cute, but shares his dislike for things like liver, milk, and baths.
Mork and Mindy hike to Exidor's rustic cabin only to find it a roofless ruin; meanwhile, Exidor prepares to rule the world as its leading rock star.
Mork decides it's best for him to leave Earth. Meanwhile, Susan invites her friends to the meeting of a motivational speaker.
Mindy's friend Sally brings her infant to the music store. She is followed by a disreputable character who steals and sells babies.
A dream leads Mork to fear his emotions are taking over his subconscious because Orkans haven't dreamed since emotions were banished on their planet.
When Mindy leaves town with her folks for a weekend visit to an ailing relative, Mork tries valiantly to entertain himself.
After Bickley appears during a party at Mindy's apartment to complain about the noise, she discovers that her necklace is missing.
Birthdays on the planet Ork are traumatic events which tend to be fatal without the strange power boosts from egg-shaped "gleeks".
Mindy, a journalism student, is thrilled when during a dinner at her apartment, her father's date, Margaret, the editor of a publication, offers her a job.
Mork is overjoyed with his new pet--a tiny, furry caterpillar he names Bob who "followed" him home.
Mindy gives Mork Earth medicine for his cold and watches helplessly as he shrinks away to nothing; Mork then enters a parallel world called Mirth where laughter and silliness have been outlawed.
Hearing that the best part of fighting is kissing and making up, Mork picks a fight with Mindy and she, furious, decides to throw him out.
Believing Mork to be wealthy, Kathy, an attractive young gold-digger, tries to convince Mork she is having his baby.
Mork gets a job as a night watchman in a science exhibition, where he befriends Chuck, an ailing robot.
When aspiring politician Nelson Flavor is unable to choose between Mork and Mindy in a staff cut, they agree to compete for the job.
Mork develops an apparent allergy to Mindy that causes him to laugh uncontrollably whenever he gets close to her.
Mork and Mindy discover that Mindy's childhood home, which is up for sale, is haunted by ghosts.
Mindy goes into the hospital for a tonsillectomy, but due to administrative error is scheduled for brain surgery.
When Nelson Flavor is the victim of political dirty tricks, Mork and Mindy go undercover to find out who is responsible.
A seductive agent from another planet romances Mork in an effort to learn about Earth customs and invade the planet.
Mork tries out to be a cheerleader for the Denver Broncos, but Nelson gets involved when Mork is rejected for being male.
Mork and Mindy are astonished when Exidor brings over a real girlfriend, and Mork must coach him into giving her a proper marriage proposal.
Believing the Air Force is a travel club, Mork joins up and goes on a secret mission to the site of a nuclear accident.
Exidor's mother Princess Lusitania objects to Exidor's upcoming wedding, and she chains herself to a post in Mindy's apartment in protest.
Mindy is stunned and Mork is thrilled when Mindy's dad, Fred, returns to Boulder with the younger woman he has just married.
Mork attends a meeting of the Committee to Clean Up Boulder, only to discover it is actually a group of white supremacists.
Feeling blue and 'Ork-sick,' Mork learns to better appreciate the joys of life on Earth after he meets Tom Bickley, who is blind.
Mork gets permission to have a little out-of-body vacation to two other planets; meanwhile, aliens borrow his body, acting in bizarre ways.
When Mindy takes over a lonely hearts column, she accidentally encourages Jeanie to start dating Mork.
Mork faces deportation until Exidor offers to adopt him.
When Nelson gets a 7 a.m. Saturday TV slot to give a political speech, he must appeal to kids with the help of Mork and Mindy's friends.
Mork decides he'd like to be a priest, confusing a number of parishioners and inadvertently counseling a man who is contemplating suicide.
Mork, who is highly susceptible to Earth advertising, temporarily becomes a buyaholic and advertising even enters his dreams.
Mork and Mindy relive hilarious highlights from their past together after Mindy's recently married father, Fred, troubled over his marriage, turns to Mork for Orkan help.
Since Mork has begun acting too much like an Earthling, an Orkan elder arrives to re-educate him in Orkan ways.
Mork meets a man who believes he is Peter Pan. Meanwhile, Mindy anxiously awaits news of a college scholarship.
When an arrogant skater named Wheels threatens to level the day-care center where Mork works, Mork challenges him to a skate-off.
After Mindy introduces Mork to the concept of practical jokes, he goes a little overboard trying them out.
Mork takes in a chimp from the zoo after its mother goes missing.
Mork's friend Billy from the day care center becomes obsessed with his new 'hero,' Billy the Kid.
When Mindy innocently suggests that everyone could use a little improvement, Mork goes to visit a plastic surgeon.
Overcome by paranoia, Mork locks himself inside a glass bubble so that he will be safe from harm.
In an attempt to help Mindy raise money for a children's hospital, Mork learns the art of begging from a bum named Godfrey.
When a snowstorm shuts down Boulder, newly-hired Mindy must fill the KTNS-TV evening news timeslot with a little help from Mork.
When a shady repairman fails to fix Mindy's record player, Mork brings him to justice by putting him on trial in front of a collection of broken appliances.
Mork's reports become so popular on Ork that the handsome Xerko arrives to challenge Mork for his job - and Mindy.
Mindy's boss, Mr. Sternhagen, wants her to interview a celebrity who's visiting Boulder - Robin Williams.
Mork goes crazy waiting for Mindy to return from a trip out of town, so he has the Orkan Elder make clones of her.
Mindy tells Mork they should date other people, so he starts taking lessons from single swinger TNT.
Mork brings home a homeless singing duo called Rick and Ruby when Remo fires them from the restaurant due to Ruby's pregnancy.
When Mindy inadvertently eats an Orkan food called flek, she loses all her inhibitions in front of her pompous uncle Dave.
Grandma Cora loses a lot of her spunk when she's mugged, until she and Mork team up to get some revenge against her muggers.
Mork, who doesn't understand why people gossip, goes on television and spreads some juicy but hurtful rumors about his friends.
When Mork plays house-husband, his attempts at domesticity are at first disastrous and he nearly gets Mindy fired from her job.
On Mr. Bickley's 50th birthday, Mindy refuses to share her regret with her friends, as she feels it's too personal.
Mork proposes to Mindy, but after counsel from her family she is pensive about the idea of marrying an alien.
Marriage has been outlawed on Ork since their Dark Ages, and Orson threatens Mork with severe punishment if he proceeds to marry Mindy.
Mork and Mindy honeymoon on Ork.
Mork gives birth to an egg, and must break the news to Mindy that they will soon be parents.
Mearth, Mork and Mindy's new son, recognizes Mork as his mother but keeps calling Mindy 'Shoe.'
Mearth discovers Mork's spacesuit and becomes convinced that his dad is a superhero.
When Mindy spends her high school reunion dancing with a still-single former sweetheart, Mork becomes jealous.
After buying too many gifts for Mearth and having to return them, Mork is convinced to invest all of his and Mindy's money in Exidor's questionable business.
When other children will not play with Mearth because he looks like a middle-aged man, Mork and Mindy feel compelled to tell him he's half-Orkan.
Mearth comes home from his first day of school on Ork crying because the Orkan children made fun of him.
Mork and Mindy agree to let Mearth have a sleepover, but are concerned when he invites his curvy Orkan classmate, Zelka.
Mork and Mindy have time alone to enjoy a romantic dinner, but things go awry until Mork finds another way to reconnect with his wife.
While Mork and Mearth are playing with an electric train set, it short-circuits and causes them to switch minds on the night Mindy's new boss wants to meet his employees' families.
Mindy grows tired of running all the errands after work, and insists that Mork learn to drive.
In a fit of pique that Mork has been neglecting his weekly reports, Orson robs Mork of all his Earth memories, and Mork no longer recognizes his family.
Mork and Mearth create a superintelligent computer called MILT which ends up taking the family hostage.
Mork and Mearth figure out a way to make gold from polyester and become fabulously wealthy.
Mindy refuses to reveal her sources on a news story and is imprisoned, while Mork negotiates for her release.
Mork and Mindy meet Kalnik, a Neptunian married to an Earthling, but things between them soon turn sinister.
While on the run from Kalnik, Mork and Mindy decide to go public about Mork being an alien.
Mork and Mindy attempt to use Mork's time travel shoes to escape from Kalnik and go to Rome, but they end up in a cave with primitive humans.
Attempting to get a promotion, Mork tries to portray to Orson the qualities of an ideal marriage.