McGarrett assists a convict in his escape, so that he can go back to his gang and provide Five-O with inside information.
Mork meets a bully who wants to dance with Mindy but Mork is opposed to violence. Humility is Mork's weapon.
Burt awakens next to Sally, Chester thinks he's Marlene Dietrich, Tim's first and last day at work goes badly, and Carol has a bridal shower.
Grandma's ex-boyfriend comes calling on Grandma much to the horror of Elizabeth. Jim-Bob persuades Yancy Tucker to make fuel in his still instead of moonshine.
Regan and Carter get caught up in a plot to prevent a foreign head of state from getting his hands on an experimental drug to treat his heart condition.
Abby's parents are flying in from Pasadena for Thanksgiving.Nicholas is surprised when the Vice-President accepts his invitation to Thanksgiving dinner with the Bradfords. He picks the Bradfords as American's typical family. Tommy puts a deposit on a used car.
Young Mr. Grace invites his workers to form a social club - in a dismal cellar badly in need of decoration. Undeterred, the staff tackle the paint and paper job with vigor.
After what seems to be a volcanic blast on Venus, a huge horn is revealed, which is not originally from there. G-Force travels to Venus to stop the Spectra invaders.
Bosley and the Angels are at a restaurant when Kris excuses herself and ends up seeing a man rob and murder the establishment's owner. After witnessing the crime, Kris is struck by the killer's car and develops amnesia.
A British Wing Commander is badly burned after he has been shot down over Belgium. London wants him back urgently, but his facial injuries make it difficult for him to go down the line. He manages to get to Paris with Natalie as his guide, but Monique decides that if he is to avoid detection he must disguise himself as a woman for the rest of the journey. Meanwhile, Madeleine is ostracised for her relationship with Kessler, but finds a new friend in Monique. The Candide and its staff are targeted by terrorists for being collaborators, and Natalie and Max fear the worst when the Gestapo arrest Albert.
In 2977, mankind has space colonies, machines do all the work and everyone just wants to have fun. When deadly plant-based aliens that look like women attack the Earth in order to colonize it, only one rogue captain can stop them.
When the partners in crime-busting respond to a reported burglary, Hutch is shot by one of the teenage robbers, leaving him critically ill in hospital. Starsky is paired with a dynamic new partner, black Policewoman Joan Meredith, to track down the thieves, and they find themselves on the trail of an operation that is using ghetto youths to commit burglaries, and then selling their hauls on the black market...
G-Force travels to a distant planet called Paradise Island, where Spectra has set up a a base from which it is attacking and pollution the water reservoirs of Earth.
Upset that the rest of the family is watching a football game instead of helping her prepare the Thanksgiving dinner, Marion reminds them of the meaning of the holiday with the story of the first Thanksgiving.
In this unique episode, the camera becomes the eyes of a young wounded soldier. It records his sensory responses to being wounded, flown by helicopter to the 4077th, examined, operated on, and treated in post-operation.
Spectra is using Bigfoot to keep people from getting too close to their latest base in Tibet. They are working on the "Inter-Frequency Disruptor", which affects ships guidance systems, causing them to crash. Keyop takes off for Tibet on his own and is captured by Spectra. He must lead G-Force to the Spectra base and escape before it's destroyed by G-Force. Zoltar is unmasked in this episode!