In order to save the planet from a rogue space probe in the future, kirk, spock, bones and co must travel back to the 20th century to find the only creature capable of communicating with it a whale. Starring william shatner, leonard nimoy and deforest kelley. It's the 23rd century, and a mysterious alien power is threatening earth by evaporating the oceans and destr oying 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. There are some wonderful comedic moments! Spock hides his vulcan ears with a headband and poses as a burnt out hippy, while the normally intrepid kirk gets lost on a bus.