The most acclaimed Star Trek adventure of all time with an important message. It is the 23rd century, and a mysterious alien probe is threatening Earth by evaporating the oceans and destroying the atmosphere. In their frantic attempt to save mankind, Admiral Kirk and his crew must time travel back to 1986 San Francisco where they find a world of punk, pizza and exact-change buses that are as alien to them as anything they have ever encountered in the far-off reaches of the galaxy. William Shatner and Leonard Nimoy return as Kirk and Spock, along with the entire Star Trek crew.

In the wake of Spock's ultimate deed of sacrifice, Admiral Kirk and the Enterprise crew return to Earth for some essential repairs to their ship. When they arrive at Spacedock, they are shocked to discover that the Enterprise is to be decommissioned. Even worse, Dr. McCoy begins acting strangely and Scotty has been reassigned to another ship. Kirk is forced to steal back the Enterprise and head across space to the Genesis Planet to save Spock and bring him to Vulcan. Unknown to them, the Klingons are planning to steal the secrets of the Genesis Device for their own deadly purpose.

It is the 23rd century. Admiral James T. Kirk is an instructor at Starfleet Academy and feeling old; the prospect of attending his ship, the USS Enterprise--now a training ship--on a two-week cadet cruise does not make him feel any younger. But the training cruise becomes a deadly serious mission when his nemesis Khan Noonien Singh--infamous conqueror from late 20th century Earth--appears after years of exile. Khan later revealed that the planet Ceti Alpha VI exploded, and shifted the orbit of the fifth planet as a Mars-like haven. He begins capturing Project Genesis, a top secret device holding the power of creation itself, and schemes the utter destruction of Kirk.

Additional language: Klingon.

A massive alien spacecraft of enormous power destroys three powerful Klingon cruisers, entering Federation space. Admiral James T. Kirk is ordered to take command of the USS Enterprise for the first time since her historic five-year mission. The Epsilon IX space station alerts the Federation, but they are also destroyed by the alien spacecraft. The only starship in range is the Enterprise, after undergoing a major overhaul at Spacedock on Earth. Kirk rounds up the rest of his crew, and acquires some new members, and sets off to intercept the alien spacecraft. However, it has been three years since Kirk last commanded the Enterprise - is he up to the task of saving Earth?