The crew of the Federation starship Enterprise is called to Nimbus III, the Planet of Intergalactic Peace. They are to negotiate in a case of kidnapping only to find out that the kidnapper is a relative of Spock. This man is possessed by his life long search for the planet Sha Ka Ree which is supposed to be the source of all life. Together they begin to search for this mysterious planet.

It's the 23rd century, and a mysterious alien power is threatening Earth by evaporating the oceans and destroying the atmosphere. In a frantic attempt to save mankind, 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 as anything they've ever encountered in the far reaches of the galaxy. A thrilling, action-packed Star Trek adventure!

After years of war, the Federation and the Klingon empire find themselves on the brink of a peace summit when a Klingon ship is nearly destroyed by an apparent attack from the Enterprise. Both worlds brace for what may be their deadliest encounter.