The Promised Planet (S03E19)
S03E19
The Robot unexpectedly informs the crew that the Jupiter II is nearing Alpha Centauri, leaving everyone astonished. Upon landing on a mysterious planet, they encounter a group of seemingly teenage Earthlings. However, these individuals are actually aliens who live in a hippie-like society and cannot age. Desiring to experience normal aging, they devise a plan to have the older members of the Robinson family depart in the Jupiter II while the younger ones remain for an experiment. The aliens manage to persuade the older members to leave, but Will cleverly outsmarts them. Ultimately, the Jupiter II returns to rescue Penny, Will, and a disguised Dr. Smith, who has deceived everyone into believing he is young.
Show
Lost in Space
Episode
S03E19
Air Date
Jan 24, 1968
Season 3 Episodes
S03E01
Condemned of Space
S03E02
Visit to a Hostile Planet
S03E03
Kidnapped in Space
S03E04
Hunter's Moon
S03E05
The Space Primevals
S03E06
Space Destructors
S03E07
The Haunted Lighthouse
S03E08
Flight into the Future
S03E09
Collision of Planets
S03E10
Space Creature
S03E11
Deadliest of the Species
S03E12
A Day at the Zoo
S03E13
Two Weeks in Space
S03E14
Castles in Space
S03E15
The Anti-Matter Man
S03E16
Target: Earth
S03E17
Princess of Space
S03E18
Time Merchant
S03E19
The Promised Planet
S03E20
Fugitives in Space
S03E21
Space Beauty
S03E22
The Flaming Planet
S03E23
The Great Vegetable Rebellion
S03E24
Junkyard in Space