Given the question: Suggest a movie title for the following movie plot: 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. Kirk's 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 Butrick)Kirk's son, a key scientist in Genesis's 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. Spock's father, Sarek (Mark Lenard), confronts Kirk about his son's death. The pair learn that before he died, Spock transferred his katra, or living spirit, to McCoy. Spock's katra and body are needed to lay him to rest on his homeworld, Vulcan, and without help, McCoy will die from carrying the katra. Disobeying orders, Kirk and his officers spring McCoy from detention, disable the USS Excelsior, and steal the Enterprise from Spacedock to return to the Genesis planet to retrieve...
The answer is:
Star Trek III: The Search for Spock