Chapter Text
In one timeline, Captain Shaw dies as his assimilated crew seeks to keep Picard and his compatriots from escaping. In another timeline, It is Seven that takes the fatal blast.
While her mind has long been partitioned from the collective, in her dying moments a long-dormant protocol is activated, and her memories are transmitted to the collective. There they are assessed by the Borg Temporal navigation and expansion matrices, and determined to be of exceedingly high value. Seven of Nine’s memories are transmitted through a temporal transmitter to young Annika Hansen, who has just been snatched from the USS Raven and placed in a maturation chamber. Pursuant to the commands encoded in the temporal transmission, Seven’s maturation chamber is substituted with an equivalent unit and relocated to a Borg Tesseract. Borg Tesseracts are a mix of timeship and library citadel, created to retain biological and technological distinctiveness that would otherwise be erased by temporal anomalies and warfare.
Annika Hansen is partitioned from the wider collective and integrated into a segment of the Borg Tesseract. She is redesignated Seven of Nine, primary unit of infiltration matrix gamma-epsilon-five. Assimilating Future Seven’s memories, Seven evaluates ways to steer Voyager’s journey without critically destabilizing a timeline. The Borg Tesseract uses its temporal manipulation abilities to go fishing for species 8472 until a specimen can be sucessfully acquired. Failed attempts are discarded in pocket timelines.
The acquired specimen of species 8472 is duplicated and assimilated into Seven’s infiltration matrix. It forms a human disguise in the role of Annika Hansen’s little sister, drawing genetic samples from the Drones the Hansens have become to help pass any potential genetic testing.
When Seven emerges from her maturation chamber, she does not resemble a typical borg drone, A queen, nor even Locutus, the Borg’s occasional mouthpiece. Seven could pass for an unmodified human, her exposed implants slim enough to read as metallic tattoos, her armored carapace sheathed in a rapidly regenerating layer of skin, a long blue coat concealing her long and toned body. Cybernetic enhancements give her strength and durability far beyond that of a human, integrated sensors in her smoky gun-metal grey brow ridge and her saphire Iris spread her perceptions far beyond the slim “visible” spectrum. Several retractable spines are nestled between her Metacarpals and Metatarsals, ready to deliver either nanoprobes or fatal toxin as situations call for each. A full head of shoulder-length hair is held back by a silvery cage of organically curving wire that provides mounting points for additional sensors, emitters, and armor. Bracers on her forearms conceal borg interface tools that would comonly take the place of a limb, as well as Phaser, laser, and Plasma emitters. A pair of high-density power cells armoured with flexible stab-resistant composites take the place of mammaries, a far more versatile nutrient synthesizer sitting next to her gut.
Seven’s first missions are infiltrations of worlds slated for assimilation. Seven is tasked with identifying priority targets for assimilation or observation, and ensuring their safe retrieval, or contriving their absence. She ‘rescues’ several sentients in this manner. Some depart, unaware of the tiny passengers riding along in their nervous systems, transmitting their discoveries back to the borg. Others drink the drought of oblivion, laced with Nanoprobes, and are smoothly integrated into the collective’s decision making matrices.
The Battle of Wolf 359 was determined to be a temporal keystone, given its impact on the development of the federation. Se’ven helped iterate the design for Locutus’s implants, especially those designed to lie dormant after his ‘rescue’ by the crew of the Enterprise. Se’ven observes the battle from a cloaked vessel some ways off.
Soon after the Battle of Wolf 359, Seven returns to the Delta quadrant, where she remains until voyager attempts to cross borg space. Seven had stealthily transmitted data indicating the ‘northwest passage’ existed, when in fact, the Borg had already reached a ceasefire with species 8472.
Seven and her ‘little sister’, Five of nine, the assimilated member of species 8472, rendezvous with Voyager and spin a tale of the Raven’s assimilation and Seven’s ‘escape’ thanks to Hugh’s interface with the collective.
The two as children of the federation are welcomed aboard voyager, though they are treated with a degree of suspicion as ‘former’ borg.
Seven covertly injects nano-probes into the neural gel-packs, spreading a borg control network throughout the ship. Five convinces Neelix to teach her how to cook, and doses the crew with nanoprobes in their food. Seven infects the Doctor’s program with a subroutine to ignore her specialized nanoprobes in the crew, but not unmodified nanoprobes.
When the opportunity presented itself, Seven began implanting Borg protocols into the minds of the crew, hidden within their subconsious.
When Chakotay, Paris, Kim, and Neelix encounter the borg cube plagued by Icheb’s modified biology, Seven’s dormant protocols activate, supressing the starfleet officers’ individuality and allowing them to interface with the cube, assimilating the children aboard into Voyager’s pseudo-collective. Activating salvage protocols, they retrieve a transwarp coil and several crates of valuable elements, as well as the children, then leave the cube. The four starfleet officers awake to five children and a baby.
Seven and five raise the children as Borg infiltration units, teaching them to fit in with the voyager crew.
Seven does not waken the Vaadwaur in this timeline, as she assimilated the species sometime before joining Voyager.
When the time comes to return to the Alpha quadrant, Seven arranges their transit through the Borg transwarp network.
With the dissolution of Voyager’s crew, Seven joins the Fenris rangers while Five infiltrates the Daystrom institute and embeds herself in the synthetic division.
Years later, when the Hobus system goes Supernova, A Borg fleet snatches millions of Romulans that would have otherwise perished under cover of cloak. The rescued romulans are then relocated to the Delta quadrant and assimilated, with neither their alpha-quadrant brethren nor the federation the wiser. Another Borg cloakship and an alteration to synthetic coding by Five snatches the workers of the Utopia Planetia shipyards from the fate the Zhat Vash would have doomed them to.
Seven has contacted Hugh and the Borg Reclamation project, establishing the emergency protocols that will bring the drones back online en-masse if things go wrong, and keep the romulans from slaughtering them all in an instant.
When events with Dahj and Soji come to a head, Seven is present and tracking Picard, and snipes the romulans that would have killed Dahj.
Five ensures Jurati avoids Commodore Oh, and the crew joins La Sirena on course for Stardust city.
Icheb in this timeline didn’t die in a chop-shop, since Seven knew who not to trust, but Seven has no compunctions about making trouble for the woman.
The crew travels to the Artifact, and Seven quietly begins the cube’s regeneration sequence while the others play detective. As the Romulans start their attack, Picard and the girls flee to Rura penthe. Elnor is assimilated into Seven’s crew, and gets a lighsaber mod for his blade, when the situation calls for it.
Thanks to Seven’s plotting, the Romulans are forced to flee the reactivating cube, and Seven jumps the cube to the Synth planet, where they take up orbit and await the romulans. Picard arrives and descends to negotiate with the Synths, Five accompanies the sisters.
When the Romulans arrive, Seven informs them they have the choice of dealing with a Federation fleet or a borg fleet, and that resistance is futile.
Later, while encountering a temporal anomaly, seven finds herself the president of a dark alternate reality. She and the crew of la sirena jump back in time to the point of divergence and mend matters, with Jurati’s assimilation being completed by Seven, having been started back at Daystrom by five.
Picard and Beverly’s son Jack is not a special borg plot in this timeline, instead Seven and Five, with the aid of the EMH and an unwitting Janeway, have already laid the groundwork for starfleet’s assimilation. The Changelings Starfleet experimented on are hunted down and assimilated, and Seven lives past the point in time she’d originally died.
Splitting the timeline to preserve it, Seven pulls the trigger in one and not in the other. Starfleet is assimilated wholesale, and there’s nothing Picard can do to stop it.
The End