David’s review published on Letterboxd :
Only two years after "The Empire Strikes Back" did the uncommon sequel occurrence and outshined its predecessor "Star Wars", this sequel phenomenon happened again in another space fantasy. "Star Trek II: The Wrath of Khan" proved to be a superior sequel thanks to a better flow, improved characterizations helped by a great rivalry, and the want to continue watching the story.
James T. Kirk (William Shatner) is still Admiral, something that he knows he should be happy about, but it's being at the helm of a ship that he really wants to do. His chance comes when Captain Terrell (Paul Winfield) of the U.S.S. Reliant and his crewman Chekov (Walter Koenig) are taken by old televison series villain, the highly intelligent Khan (Ricardo Montalban).
Khan has been stranded on a desolate planet for years and lost many close to him including his wife. For this, he blames Kirk, and he wants revenge. Implanting Terrell and Chekov with creatures that allow him to control the two, Khan lures the Enterprise, which is to be temporarily captained by Kirk. The bait: Kirk's former flame Carol (Bibi Besch) has been working on a project called Genesis, which amazingly can create and regenerate life, but thanks to Chekov she believes the project is being shut down. The temporary Captain is ordered to investigate since the project is not supposed to be stopped, and soon Khan reveals himself and his deadly plan of vengeance.
Almost immediately "Star Trek II: The Wrath of Khan" starts in a more entertaining style and a much better flow than the first film. Most of the characters are the same, and yet, they are much more fun to watch this time around from the way they act to the dialogue they use.
If you've never seen Khan on the original "Star Trek" series, it's ok, because his history with Kirk is explained well. This is a great rivalry. Khan is evil, but you can almost understand his motive as he starves for revenge. Kirk is good, and it's great watching his anger grow as his enemy continues gunning for him. Surprisingly, the two never get to appear in the same room simultaneously, but they play so well off each other it's hard to notice. Just watch when they are talking from ship-to-ship and Khan gives him sixty seconds to surrender. Scenes like this are great. Khan is extremely smart and will stop at nothing; Kirk is smart and experienced. Like I said, this is a great rivalry.
This sequel has alot of emotional and character depth, and it's very entertaining all the way around. One of my favorite Sci-Fi films hands down. Check it out even if your not a Trek fan.