Star Trek II: The Wrath of Khan

Back in the sixties, there was a TV episode called 'Space Seed', where the Enterprise encounters a ship full of people, all in cryogenic suspension. They turn out to be genetically engineered 'super humans' from the late 20th Century, led by a power-crazed madman, Khan Noonian Singh (Montalban).

After a few customary struggles, the Enterprise crew manage to cast them away on the remote planet of Ceti Alpha V.

The movie kicks off twenty years later, when aided by Chekov's new boss Captain Terrell, Khan and his followers escape and are intent on revenge against the now-Admiral Kirk.

They get wind of something called the Genesis Device, designed by Dr Carol Marcus (an old flame of Kirk) and her son, David, who obviously proves to be Kirk's unknown son. Khan wants to steal the device and use it as the ultimate weapon, because it would scour all life from a planet before applying it's own genetic matrix. Kirk commandeers the Enterprise (on a 2-week training cruise) and takes off after Khan.

Using Chekov and Terrell, who are being controlled by eel-like creatures inserted in their heads, they steal the device, cripple the Enterprise and abandon Kirk, Dr Marcus and most of the team deep inside the lifeless moon chosen for the Genesis test firing.

However, Kirk escapes, due to some clever subterfuge by Spock and soon it comes down to a battle between the two ships and the two men, when Kirk has to try and outwit his greatest adversary.

Meanwhile, down in the engine room, his greatest friend faces his own challenge...