Which Star Trek film centers on the alien entity V'Ger?

Star Trek: The Motion Picture centers on the alien entity V’Ger.

V’Ger appears as a vast energy cloud traveling toward Earth and destroying anything that blocks its path. Starfleet sends the newly refitted USS Enterprise to investigate. The crew eventually discovers that the entity is the transformed Voyager 6 probe, which was launched from Earth centuries earlier and modified by advanced machine beings.

The film’s climax reveals that V’Ger is searching for its creator and cannot understand the information it has gathered. Its encounter with humanity becomes a story about identity, evolution, and the limits of pure knowledge. The revelation also connects an apparently cosmic threat to a human space-exploration mission.

V’Ger is not a conventional villain like Khan or Nero. It is an immensely powerful, partly machine intelligence whose actions result from its programming and incomplete understanding. That distinction is central to the film’s science-fiction approach.