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When a huge alien probe enters the galaxy and begins to vaporize Earth's oceans, Kirk and his crew must travel back in time in order to bring back whales and save the planet.

Director : Leonard Nimoy

Writer : Steve Meerson, Nicholas Meyer, Peter Krikes, Harve Bennett

Cast

William Shatner

Leonard Nimoy

DeForest Kelley

James Doohan

George Takei

Walter Koenig