Star Trek III: The Search for Spock 4K 1984

The defeat of Khan and the creation of the planet Genesis were another triumph for Captain James T. Kirk; but for him, these victories no longer matter. Kirk has lost one of his best friends, Spock, who died saving the Enterprise, and that loss is irreplaceable.
At the same time, Kirk is close to losing another of his best friends, McCoy, who has lost his mind.

An unexpected visit from Zarek, Spock's father, clarifies the situation and gives Kirk hope - Spock is alive, and his mind is currently placed in McCoy's body. To help his friends, Kirk hijacks his ship, which by then has already been scrapped, and breaks the Federation's quarantine on the planet Genesis, where a scientific expedition led by his son David is working.
But at the same time, the Klingons learn about the existence of Genesis, and their warship under the command of Commander Kruge is hurriedly heading towards the planet Genesis. Their meeting is inevitable...