What is the subtitle of the fourth Star Trek film?

The subtitle of the fourth Star Trek film is The Voyage Home.

Released in 1986, Star Trek IV: The Voyage Home follows the crew’s return to Earth after the events of Star Trek III: The Search for Spock. They travel back to the late 20th century to find humpback whales, whose songs may answer a mysterious probe threatening Earth.

Leonard Nimoy directed the film, which combines science fiction with time-travel comedy and environmental themes. It became one of the most commercially successful entries in the original-cast film series.

The title is often confused with other original-series subtitles. The Search for Spock is the third film, The Final Frontier is the fifth, and The Undiscovered Country is the sixth. The fourth film’s title specifically reflects the crew’s journey back to Earth and into the past.