An overworked and stressed out Major Kira is relieved of duty by Doctor Bashir in the hopes that she will use the time to relax and recuperate. While beginning her vacation, the Major is approached by Commander Riker of the U.S.S. Enterprise. While taking a tour with Kira around the station, Riker asks to see the Defiant. Once on board, he stuns Kira with a phaser blast and takes control of the warship.
When the Cardassian occupation of Bajor ended in 2369, the mining space station Terok Nor was left abandoned, its systems ripped out. By invitation of the Bajoran provisional government, Starfleet stepped in to oversee the rebuilding and day-to-day operations of the newly christened Deep Space Nine.
The years of Starfleet's nonintervention into Cardassian matters, however, had taken its toll on relations with the Bajorans. Consequently, Starfleet's position was a tenuous one; many Bajorans, suspicious and hostile as a result of decades of Cardassian oppression and brutality, did not greet the Federation's presence with open arms. The Federation's assistance is put to the test as DS9 becomes a center of travel and commerce that stretches into the Gamma Quadrant.