12. Blink of an Eye

The starship Voyager approaches an alien world which is enveloped in a tachyon field, giving it an odd temporal nature. To learn more about the planet, Captain Kathryn Janeway orders the ship to move closer, but Voyager becomes trapped in orbit by the planet's magnetic field. While the crew concocts an escape plan, Seven of Nine surveys the planet and discovers that Voyager ' s presence is causing occasional quakes. Further scans reveal that time passes at a much more rapid rate on the planet and it is inhabited by primitive humanoids.

The crew determines the planet experiences 58 sunrises per minute of shipboard time. As hours on Voyager pass, centuries pass on the planet and its humanoid inhabitants reach a level of technology similar to 20th-century Earth. As the crew discusses the unusually rapid technological progress of the species, a radio message is broadcast at Voyager. Tom Paris wants to reply but Tuvok points out that the species has not developed warp technology; a reply would be a violation of the Prime Directive. Janeway suggests a covert one-person mission to the planet.

As he would not be affected by the change in the passage of time because he is a hologram, the Doctor volunteers for the mission, which, due to the time differential, lasts three years from the Doctor's perspective, even though he is only gone from the ship for minutes. Upon returning, he reports that Voyager, simply by its presence, has encouraged the society to advance as the humanoids attempt to contact the "sky-ship". While some strive to establish peaceful contact, others are developing increasingly powerful weaponry to shoot down Voyager and stop the earthquakes.

The humanoids develop technology sophisticated enough to send astronauts on a crewed mission to make contact with the sky-ship. A capsule is launched and succeeds in docking with Voyager. Its two astronauts, a male and female, begin to explore the ship, which appears frozen in time, but fall unconscious from the stress of adjusting to the different space-time. The bodies are found on the bridge and are taken to sickbay. The female dies from the shock of adjustment but the male, Gotana-Retz, is successfully treated whilst Voyager is hit by a bombardment of antimatter artillery.

Janeway urges Gotana-Retz to return to the planet and convince them to cease the attack. Gotana-Retz does so just after Voyager's shields collapse. Suddenly, two spaceships appear alongside Voyager and use tractor beams to tow the vessel out of the planet's field. A visibly older Gotana-Retz briefly transports to Voyager to explain what has happened and Janeway thanks him and his people. On the surface, an elderly Gotana-Retz, long returned from his experience in space, gazes wistfully into the sky as his people's sky-ship vanishes from the heavens.