Star Trek IX: Insurrection (1998)

Lieutenant Commander Data is temporarily transferred to an undercover mission observing the peaceful Ba’ku people. While on their planet, he malfunctions and reveals the presence of the joint Federation–Son’a task force observing the Ba’ku. Admiral Matthew Dougherty contacts the USS Enterprise-E to obtain Data’s schematics for recovery purposes, but adamantly states the presence of the Enterprise is not needed. The crew decides to ignore these orders and takes the Enterprise to capture Data. Captain Jean-Luc Picard becomes suspicious of Dougherty’s insistence that the Enterprise is no longer needed and orders the cause of Data’s malfunction to be investigated. The crew discovers that the Ba’ku possess advanced technology, but have rejected its use to live simpler lives. Due to unique “metaphasic particles” emanating from their planet’s rings, they are effectively immortal.

By contrast, the Federation’s allies, the Son’a, are a decrepit race who rely on medical technology to prevent death; their excessive use of cosmetic surgery gives them a mummified appearance. The Enterprise crew also begin to experience the rejuvenation effects of the planet: Lt. Commander Geordi La Forge finds his eyes have regenerated and he no longer requires ocular implants, Commander William Riker and Counselor Deanna Troi rekindle their long-abandoned relationship, and Picard develops a romantic relationship with the Ba’ku woman Anij. Data and Picard discover a submerged and cloaked Federation ship containing a gigantic holodeck set up to recreate the Ba’ku home village. Data’s malfunction stems from a Son’a attack, the result of his accidental discovery of the vessel.