The Wrath of Kahn from 1982. Say this to most Trek fans and they will tell you it’s the best of the movies. While i disagree it is definitely up there on the list. We follow Admiral Kirk on a training mission with a mostly new crew, tho the usual suspects are present.
Soon after the movie starts some philosophical conversations happen about age, life and death and various other topics. Eventually it is discovered by Chekhov and his captain that the planet Kahn and his crew Kirk exiled them to underwent a massive change about 6 months after and they barely survived the new wasteland like atmosphere of the planet. Using this opportunity to steal the reliant kahn and his crew attempt to steal secret technology known only as genesis as well as attempt revenge on Kirk.
All of this mostly takes the back seat to what many recognise as the greatest space battle in movie history, as Kirk and Kahn attempt to one up each other while both ships are badly damaged and blind. The ending is probably one of the most emotional moments in Star Trek history when Spock is killed saving the Enterprise crew from Kahns last ditch effort to kill Kirk. As always thanks for joining me and may the gaming gods bring you glory.