For use on questions about Star Trek: Deep Space 9, the 1993 Star Trek TV Series. Use this tag in conjunction with the [star-trek] tag and other relevant tags (such as character tags).
Star Trek: Deep Space Nine (aka DS9) is part of the Star Trek franchise. The television series is set on a formerly-Cardassian space station at the edge of Federation territory, as opposed to on a starship. The series chronicles events that take place after Starfleet takes command of the station and relocates it near the newly discovered Bajoran wormhole that accesses the unexplored — and previously unreachable — Gamma Quadrant.
DS9 is decidedly darker and more serious than previous Star Trek offerings, with many plots revolving around politics, war, oppression, religion, and identity. The station itself serves as a center of interstellar trade and interspecies conflicts, culminating in The Dominion War. (See star-trek-dominion.) Over its run, the series slowly chips away at the idea that the United Federation of Planets is a Utopia — particularly through the plot elements of the Maquis and Section 31.
The scope of the show was broadened in later seasons by the inclusion of a vessel, the USS Defiant, which was at the disposal of the station's Starfleet personnel.