"Star Trek: The Continuing Mission"
"Future Imperfect"
Note: A Conjectural
"What If" tale that branches off from the TNG episodes
"All Good Things" &
"Parallels", at the point of
2380.
The Borg had been a collection of emotions. Reticent, ebullient, curious & unflinchingly cold about the facts before one of the multitude of fledgling sects finally decided to reach out and contact the Federation. Millions died, Billions more were assimilated. Earth, Vulcan, Andor, Tau Ceti, Romulus, Quonos, Tellar, & thousands more systems were clogged with detritus. Species 8472 had tried to assist Starfleet; but, were all but defeated.
Twenty-four cubes. Several subspace telescopes had picked-up a sun-dimming glot of thick-skinned tactical vessels en-route for Earth. The
Enterprise-E was the only vessel to survive the initial engagements. Starfleet Headquarters enacted a Federation Wide disclaimer to incoming vessels and removed non-essential personnel as best they could.
Jem Hadar freedom fighters that had broken free of Ketracel White dependance, former Reman slaves, Breen, Syndicates like the Orions and Androssi stood their ground - instantly perishing. The Enterprise-E led the en-masse exodus to the Gamma Quadrant via the Bajoran Wormhole. The rest of the fleet laid cover-fire for the few successfully configured people-movers, ones capable of quantum slipstream, to get families out of harm's-reach and hopefully recruit some old friends to their aid.
The Dominion Founders were on-the-run. The Borg eventually adapted the biological and technological distinctiveness of The Great Link to their own six months after Earth fell. There was nowhere for the shape-shifters to go and nothing to disguise themselves as. The Tzenkethi wouldn't and couldn't help them, as they were among the last to join the conflict and the most enthusiastic about dying an honorable death against a worthy prey.
The Kam Ja'thae (Hur'q) were the first to take advantage of the vulnerabilities of their surroundings, realized there was little left from the Dominion War to pilage and destroyed the Klingon Homeworld before being annihilated by the Borg at Remus. There was a negligible twinge of regret at the loss of life as the Alliance stood by and watched, assuring themselves of one less adversary or mouth to feed in the long or short run.
The only chance to even the odds, survive, and send them a message were to select or conscript volunteers to accost the Collective on even ground. Advances were made in biomechanical utility grafts & other means of self-defense. Traitors and collaborators were often convicted in-absentia and shot on-sight. Hugh Of Borg (and others who'd successfully concealed themselves since their eviction from Unimatrix One in the Necrit Expanse and a variety of other settlements,) led the first few battles against his bretheren & for a while the Alliance held the line.
Jean Luc Picard & the Enterprise-E had been boxed-in. The Queen personally beamed aboard to re-capture and irreversibly assimilate Locutus before the final blow to the Terran System. A Pyramid-shaped vessel moved in, positioned itself and discharged an energy weapon into the planet's crust initiating a global cascade reaction. The planet fractured like an egg, large chunks of its mantle dimming with the loss of its magma to the frightening cold and deprivation of air.
Axehead-shaped pieces of Earth's now-rootless mass drifted apart, tumbling end over end with an unimpressive tuft of released steam. The cubes assumed a protective vanguard around the planet's now inert center & merged. Some of the remaining cubes that continued to enter the Terran System assumed parallel courses with the ruins of Human Civilization & began secretive operations. Days later, the monolithic structure would piggyback its siblings and resume course as a unified juggernaut out of the Sol System, inexplicably releasing the Enterprise from the lead vessel's Queen's Sphere chamber.
B4 would turn up missing after this encounter. Commander Geordi LaForge would assume command and spend the next few years hanging on by his fingernails to the center seat (and his sanity,) with an old friend by his side. Chief Miles O'Brien
formerly of Deep Space Nine would lose all his friends to the Borg, to reclaim a berth on the
Enterprise-E as its' Executive Officer. The
Defiant would go down in flames with all hands, just four days after the assault on Earth.