Twilight of the Federation Part 1:
The Entity
Prologue: During the years following the Dominion War the Alpha Quadrant had begun to stabilize and destabilize in some regions. The Cardassian Union had been left in ruins after the war. 8 Billion Lives' extinguished in the final hours of the war. The Federation had lost a quarter of the Fleet, The Klingon Empire had lost a huge amount of men and equipment taking back planets from the Dominion. Earth was still recovering from the Breen Attack which destroyed Starfleet Headquarters and killed 9 million across the world. During the war the Federation was not able to attend to diplomatic matters as much because of the concentration on defeating the Dominion Alliance so many neighboring races became hostile to the Federation and began to launch raids into Federation space. In 2379 the Romulan Star Empire had lost its Praetor and then the Imperial fleet and senate fought to regain power.
During all this a power which had remain hidden took advantage and placed operatives inside all the major powers of the Alpha and Beta Quadrants in preparation for a plot that would topple those governments.