Spazio_1999_02x23 Apr 2026

The planet's once-safe vegetation becomes toxic, and the Alphans' metal equipment begins to corrode rapidly.

Reviewers often note that the alien appears as a "blinding light," a stylistic choice sometimes attributed to the season's budget constraints. Spazio_1999_02x23

Two crew members die after drinking water previously declared safe, and an unknown alien presence kills anyone who attempts to look directly at it. The planet's once-safe vegetation becomes toxic, and the

Fans often compare this episode to the Star Trek episode of the same name, though the plots are entirely different. AI responses may include mistakes. Learn more Fans often compare this episode to the Star

The crew discovers ancient ruins containing a recording that identifies the planet's sole inhabitant as a powerful, immortal life force. This being is trying to make contact with the Alphans, but its immense power inadvertently threatens their survival.

Commander Koenig leads a survey team to a seemingly lush, Earth-like planet to replenish the Moonbase's rapidly depleting supplies. However, their arrival triggers a catastrophic atmospheric chain reaction:

In the British science-fiction series (Italian title: Spazio 1999 ), Season 2 Episode 23 is titled " The Immunity Syndrome " . First aired on October 29, 1977, the episode follows the crew of Moonbase Alpha as they face a lethal misunderstanding with a powerful alien being. Episode Overview Title: The Immunity Syndrome Season/Episode: Season 2, Episode 23 (Production No. 23) Original Air Date: October 29, 1977 Director: Bob Brooks Writer: Johnny Byrne Detailed Plot Summary