Star Trek IV: The Voyage Home
Overview
 
Star Trek IV: The Voyage Home is a 1986 American science fiction film released by Paramount Pictures. It is the fourth feature film based on the Star Trek
Star Trek
Star Trek is an American science fiction entertainment franchise created by Gene Roddenberry. The core of Star Trek is its six television series: The Original Series, The Animated Series, The Next Generation, Deep Space Nine, Voyager, and Enterprise...

science fiction television series and completes the story arc begun in Star Trek II: The Wrath of Khan
Star Trek II: The Wrath of Khan
Star Trek II: The Wrath of Khan is a 1982 American science fiction film released by Paramount Pictures. The film is the second feature based on the Star Trek science fiction franchise. The plot features James T...

and continued in Star Trek III: The Search for Spock
Star Trek III: The Search for Spock
Star Trek III: The Search for Spock is a 1984 motion picture released by Paramount Pictures. The film is the third feature based on the Star Trek science fiction franchise and is the center of a three-film story arc that begins with Star Trek II: The Wrath of Khan and concludes with Star Trek IV:...

. Intent on returning home to Earth to face trial for their crimes, the former crew of the USS Enterprise finds the planet in grave danger from an alien probe attempting to contact now-extinct humpback whale
Humpback Whale
The humpback whale is a species of baleen whale. One of the larger rorqual species, adults range in length from and weigh approximately . The humpback has a distinctive body shape, with unusually long pectoral fins and a knobbly head. It is an acrobatic animal, often breaching and slapping the...

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