Star Trek: Insurrection manages to recall the original 1960s series' spirit of liberalism, while transcending it for sheer boldness, embracing issues that are on the political cutting edge in the 1990s and beyond. The fact that the first 30 minutes are presented as a mystery only makes the material more engrossing. While assisting a survey team of Federation allies observing the populace of a distant planet, Lt. Commander Data (Brent Spiner) seemingly goes berserk and attacks the survey team, exposing their existence to the populace and jeopardizing the mission. Captain Picard (Patrick Stewart) brings the Enterprise into orbit to try and apprehend Data and find out what happened . He discovers that the mission isn't one of observation, but the involuntary relocation of a small, peaceful population, undertaken by the Federation and its rogue planet allies the Son'a, supposedly to secure the planet's youth-restoring qualities. As it turns out, there's a much darker side to the plans of the Son'a, and a personal side to the carnage planned by the Son'a leader Ru'afo (F. Murray Abraham). Picard and his officers, suitably outraged by this violation of the Prime Directive -- that no Federation mission may interfere with the natural evolution of an alien culture -- take matters into their own hands in an attempt to expose the plot to public scrutiny, risking their lives in the process.
by Bruce Eder synopsis