While exploring Luyten 726-8, a binary system mere two jumps from Sol, 1. Survey Group encountered alien ships. Classified as Mace class, they had thermal signature of 800. Junior Lieutenant Alvina Dave, commanding Survey Ship Antonio Abetti, hailed the aliens and a diplomatic team was set to crack open communications and open diplomatic negotiations. As a precaution, JLtn Dave turned her ship towards the JP.
Unfortunately the alien vessels were out-speeding her by a comfortable margin (5969 km/sec) and after closing-in to ~16 million kilometers, opened fire with missiles. Their "Dragon" ASMs caused 5 points of damage per missile, with a velocity of 27,500 km/sec. After three salvoes, Antonio Abetti blew up, leaving behind 119 crew members in lifepods, though JLtn Dave was not amongst them.
So Terran Federation is now at war with these aliens. The only ready flotilla is H.11 Frigate Flotilla, which was immediately ordered to return to Earth from TF training exercises, refuel&resupply and overhaul. Luckily this was completed quickly. H.11, led by Lieutenant Commander Quintin Politz, consists of ten ships. The command division has Iowa class FFL Cardiff and Tennesseee class JF Aardvark. Beam division has Forrestal class FF's Afognak, Aguitchuk, Aiaktalik and Akhiok. Missile division has Arleigh Burke class FFG's Alliance, Armada, Breton and Bulwark. Their mission is gauge out the threat level of the aliens, whether Luyten 726-8 is their home system and if possible, to neutralize them as a threat to humanity. As the only full flotilla with some actual training, H.11 is not to risk itself unnecessarily.
It is now 13th August 2051, 00:53 and H.11 has just entered Luyten 726-8.