Stardate 52889.3: The Federation has started to catch up with the new Dominion-Breen weaponry. Arriving from the Utopia Planetia Fleet Yards is the U.S.S. Sao Paulo, a Defiant-class warship with the most up-to-date specs on Breen weaponry. With the arrival of the Sao Paulo, the Federation is once again back in the game. On Cardassia Prime, Colonel Kira, Garak, and Legate Damar attempt to bring more of the Cardassian military into their force, only to be caught in a trap. The three transport to the surface in an out-of-the-way place, but they see that they are in trouble. Their Jem'Hadar vessel is destroyed high above them, they are left stranded deep in enemy territory.
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.