Episode 1: Advent of War (Season 2)

After the Borg Invasion was stopped, the Infested retaliate. In the interest of inciting war, they detonate a thalaron bomb in Paris, right in the city where the President of the UFP has her office. The President, Nanietta Bacco, managed to survive the incident, but when Starfleet Intelligence cite that Praetor Tal'Aura of the Romulan Empire is the most likely to be behind the attack, she authorises Starfleet to investigate and act on this threat to the Federation. Meanwhile, a rival to Martok has revealed the location of the Theurgy to Starfleet Command. The rival also challenge the decision by the High Chancellor to side with Captain Ives, seeking to undermine Martok's power in the Klingon Empire for his own gain. Link: Advent of War Calendar. The rival to Martok was defeated, and the Klingon Empire found new unity under their High Chancellor. A unity against the new threat of the Infested, which was no more just a rumour in the Beta Quadrant.