Desc: Star Trek 4: Hành Trình Về Nhà: Directed by Leonard Nimoy. With William Shatner, Leonard Nimoy, DeForest Kelley, James Doohan. To save Earth from an alien probe, Admiral James T. Kirk and his fugitive crew go back in time to San Francisco in 1986 to retrieve the only beings who can communicate with it: humpback whales.