The continuing war with the Dominion begins to strain relations between the Klingons and the Romulans. Meanwhile, the Federation is more than happy to accomodate their new Romulan friends. However, some within the Federation are not happy about this. One of them is Luthor Sloan, Director of Section 31. Reaching out to his newest recruit, he assigns Doctor Julian Bashir to a clandestine mission.
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.