Star Trek III: The Search for Spock
Star Trek III The Search for Spock is a 1984 American science fiction film released by Paramount Pictures. The film is the third feature film of the Star Trek science fiction franchise and is the center of a threefilm story arc that begins with Star Trek II The Wrath of Khan and concludes with Star Trek IV The Voyage Home. After the death of Spock Leonard Nimoy, the crew of the USS Enterprise returns to Earth. When James T. Kirk William Shatner learns that Spocks spirit, or katra, is held in the mind of Dr. Leonard Bones McCoy DeForest Kelley, Kirk and company steal the Enterprise to return Spocks body to his home planet. The crew must also contend with hostile Klingons, led by Kruge Christopher Lloyd, bent on stealing the secrets of a powerful terraforming device.
The Federation Starship Enterprise returns to Earth following a battle with the superhuman Khan Noonien Singh, who tried to destroy the Enterprise by detonating an experimental terraforming device known as Genesis. The casualties of the fight include Admiral James T. Kirks Vulcan friend, Spock, whose casket was launched into space and eventually landed on the planet created by the Genesis Device. On arriving at Earth Spacedock, Doctor Leonard McCoy begins to act strangely and is detained. Starfleet Admiral Morrow visits the Enterprise and informs the crew the ship is to be decommissioned the crew is ordered not to speak about Genesis due to political fallout over the device.David Marcus Merritt ButrickKirks son, a key scientist in Genesiss developmentand Lieutenant Saavik Robin Curtis are investigating the Genesis planet on board the science vessel Grissom. Discovering an unexpected life form on the surface, Marcus and Saavik transport to the planet. They find that the Genesis Device has resurrected Spock in the form of a child, although his mind is not present. Marcus admits that he used unstable protomatter in the development of the Genesis Device, causing Spock to age rapidly and meaning the planet will be destroyed within hours. Meanwhile, Kruge Christopher Lloyd, the commander of a Klingon vessel, intercepts information about Genesis. Believing the device to be potentially useful as a weapon, he takes his cloaked ship to the Genesis planet, destroys the Grissom, and takes hostage Marcus, Saavik, and Spock. ........
Source: Wikipedia