The original Star Trek series focuses on the 23rd century adventures of Captain James T. Kirk and the U.S.S. Enterprise (NCC-1701), a powerful interstellar spacecraft dispatched by Earth-based Starfleet Command to explore the galaxy. Kirk commands a crew of 430 men and women aboard his starship, which can travel at speeds surpassing the speed of light. Kirk's five-year mission—and his mandate from Starfleet—is to seek out new life and new civilizations, and to boldly go where no man has gone before.

Star Trek: The Animated Series boldly continues where Star Trek: The Original Series left off, these animated adventures chart the progress of Captain Kirk and his crew in a universe unconstrained by "real-life" special-effects limits! It premiered in 1973 as a Saturday morning cartoon - four years after The Original Series' final season. The series' 22 episodes featured characters voiced by their original actors and was the first Star Trek series to win an Emmy Award.

Star Trek: The Next Generation (TNG) focuses on the 24th century adventures of Captain Jean-Luc Picard aboard the U.S.S. Enterprise (NCC-1701-D). This incarnation of the famous starship is much larger than the one captained by James T. Kirk a century earlier, and, accordingly, it carries a larger crew complement: 1,012 men, women…and, surprisingly, children. This era's Starfleet Command believes that men and women are more likely to sign up for long-term exploratory missions if they think of their ship as home. Thus, Picard's crew enjoys many of the comforts they'd have otherwise left behind, including a wide variety of recreational opportunities, "replicated" food dishes to suit every palate, and quarters large enough to share with spouses and offspring. There are schools for the children and a bar (stocked with synthetic alcohol, or synthehol) where the adults can unwind. However, the ongoing mission—no longer limited to a mere five years—remains virtually the same as it was during Kirk's time: to seek out new life and new civilizations, and to boldly go where no one has gone before.

Star Trek: Deep Space Nine (DS9) focuses on the 24th century adventures of Captain Benjamin Sisko on space station Deep Space 9, an outpost situated near the mouth of a stable wormhole on the far reaches of explored space. Although Sisko commands Deep Space 9, the station actually belongs to the inhabitants of nearby Bajor, who requested Starfleet's protective presence after Bajoran freedom fighters put an end to the brutal Cardassian occupation of their world. Approximately a sixth of the station's 300 permanent residents are Starfleet personnel; there is also a sizable Bajoran militia presence. The rest of Deep Space 9's inhabitants are civilians, most of whom work in the station's Promenade, a kind of indoor marketplace. Initially, Sisko's mandate from Starfleet was to protect Bajor and the station from any hostiles who ventured into the area. But with the discovery of the nearby wormhole—a shortcut through space that leads directly to the uncharted Gamma quadrant—Sisko's mandate has expanded exponentially, as the region becomes the gateway to all manner of visitors, both friendly and extremely hostile.

Star Trek: Voyager (VOY) focuses on the 24th century adventures of Captain Kathryn Janeway aboard the U.S.S. Voyager. Smaller than either Kirk's or Picard's starships—its crew complement is only 150—Voyager is fast and powerful, and has the ability to land on a planet's surface. It is one of the most technologically advanced vessels in Starfleet, utilizing computer circuitry that incorporates synthetic neural tissue. Ironically, Janeway's inaugural mission aboard Voyager was to be her last in the Alpha quadrant. While attempting to capture the crew of a renegade Maquis vessel, both her ship and that of the Maquis were pulled into the distant Delta quadrant by powerful alien technology. Unfortunately, there would be no similar "express" route to take them home again. Stranded 70,000 light-years from Earth, Janeway convinced the Maquis to join her Starfleet crew and serve together during the long voyage back to Federation space.

Star Trek: Enterprise (ENT) focuses on the 22nd century adventures of Captain Jonathan Archer aboard the Enterprise NX-01 during the early days of interstellar travel. The NX designation indicates that this Enterprise is an experimental prototype; Unlike the starships of the four other Star Trek series, this Enterprise doesn't have deflector shields or phasers, but it does come equipped with a phase cannon and a rudimentary transporter that functions efficiently most of the time.

The series is set 20 years after Jean-Luc Picard's last appearance in Star Trek: Nemesis (2002), and follows him in the next chapter of his life.

The Center Seat: 55 Years Of Star Trek is a multi-episode documentary series that takes viewers on the definitive in-depth journey behind the scenes of one of the greatest landmark franchises of all time: Star Trek. Celebrating the show's 55th anniversary, each episode focuses on a different chapter in the groundbreaking program's history, starting with its inception at Lucille Ball's legendary production company Desilu. Interviews with the cast, crew and experts reveal never-before-heard backstage stories and offer fresh insights. No stone is left unturned, including lesser-known aspects of the franchise like The Animated Series and Phase II. Additionally, The Center Seat features one of Leonard Nimoy's final in-depth Trek interviews. Star Trek is the most iconic television science-fiction saga of all time and remains more popular than ever. The Center Seat details how it began, where it's been, and how it's boldly going where no television series has gone before!

Star Trek: Strange New Worlds follows Captain Pike, Science Officer Spock and Number One in the decade before Captain Kirk boarded the U.S.S. Enterprise, as they explore new worlds around the galaxy.

In this documentary mini series for Canadian television, Shatner, in each of the five half an hour episodes, presents and interviews one of the people who played the five Star Trek captains before the 2009 reboot. Chris Pine interviews him.