When the crew of the Enterprise is called back home, they find that an unstoppable force of terror from within their own organization has detonated the fleet and everything it stands for, leaving the world in a state of crisis. With a personal score to settle, Captain Kirk leads a manhunt to a war-zone world to capture a one-man weapon of mass destruction.

On the day of James Kirk's birth, his father dies on his ship in a last stand against a mysterious alien vessel. He was searching for Ambassador Spock, who is a child on Vulcan, disdained by his neighbors for his half-human nature. Twenty years later, Kirk has grown into a young troublemaker. He is inspired by Capt. Christopher Pike to fulfill his potential in Starfleet, even though he annoys his instructors. Suddenly, there is an emergency on Vulcan...

A Chernobyl-like disaster on a Klingon moon has the Klingon leader attempting to make peace with the Federation. Sent to escort the leader to the peace talks is Captain Kirk and the Enterprise crew. The crew becomes stunned when unknown conspirators murder the Klingon leader and the blame is fixed on them. Captain Kirk and Dr. McCoy are accused of the crime. As they stand trial for murder, Mr. Spock and Vulcanian trainee Lt. Valeris try to locate...

When Kirk, Spock, and Bones arrive at the scene of a crime where a group of ambassadors has been kidnapped, the Enterprise is taken over by a Vulcan cult leader who is Spock's half-brother.

The Federation Starship U.S.S. Enterprise is on routine training maneuvers, and Admiral James T. Kirk seems resigned to the fact that this may be his last space mission. But Khan--a brilliant renegade of 20th Century Earth--is back with his exiled band of genetic supermen and setting a deadly trap for his old enemy Kirk...with the threat of a universal Armageddon!

Celebrate the 50th anniversary of Star Trek through a personal, intimate look at the life and career of Leonard Nimoy and the enduring appeal of his alter ego, Mr. Spock, as told by his son, Adam Nimoy.