January 21st, 2258, Sarah's Exodus Class Starfighter, "Artimech-1"

Sarah leaned back into her seat, relaxing after a year of battles. She finally had permission from her parents to take some time off and explore the Galaxy in her personal Starfighter, equipped with Hyper-drives. The then 22 years old Crown Princess had no idea what the fates were planning for her.

"Sarah, This is Valerian, We're detecting an unknown anomaly in your vicinity, Over." The Starfighter's Comms crackled to life as she opened her eyes and leaned forward, Answering the Comms, Her angelic voice belied her youth as she spoke.

"Roger that Val, I'll take a look, Sarah out." She said as she turned off the Comms, She grasped her fighters' joystick and fired up her engines, she was drifting to take in the stars surrounding her in the Galactic void, As she turned her starfighter, She instantly took note of a portal and she had no time to send out an SOS call or to even flick her Comm channel on as Her starfighter was sucked in, What'll happen and will occur will defy everything Sarah has known…

Baal, Near the Arx Angelicum.

The Starfighter spat out of the portal at high speeds frightened Sarah who barely regained control of the craft after yanking hard on the joystick, The engines and her body strained against the G-force pressed against both machine and pilot, As she leveled out, She immediately saw unknown Bugs assaulting the owners of this world.

"Huh, Looks like they need help, Time to be a thorn in these bugs' sides." She said as she grabbed her weapons and kit, She grinned in anticipation as she opened the door and racked a shell into her Shotgun and she grabbed her jetpack equipping it as she ran out the rear of the rear compartment, and into the battle while Serina pilots her Starfighter against any airborne Hostiles…

The Blood Angel's Lines, Mephiston's Positions, Near the Arx Angelicum

Mephiston fired his Plasma Pistol upon the overwhelming tide of Tyrannic Bio-forms and swung his Force Sword Vitarius at a Hormagaunt bisecting it in half.

"HOLD THE LINE BROTHERS! FOR THE EMPEROR!" He roared as the Blood Angels and their Successors continued to fight, a Hormagaunt lost their head quite literally when a loud gunshot was heard, Mephiston looked up and was shocked to see a Jetblack Armored soldier landing using a Jetpack, As the Warrior landed, It was clear that this woman was crazy enough to land right next to him.

"Need any help?" She asked in Low Gothic much to his surprise as a Termagant tried to shoot her but she fired a hail of buckshot at it, Blowing it's head to bits.

"We do, Who are you?" Mephiston asked as the Woman pulled out a Sword and upon activating the Blade, The hilt Gold and Purple which she used to impale a Hormagaunt and blew it's head off with her shotgun.

"My name is Sarah, Sarah Beatrice Smith, Commander of the Terran 145th Marine Division, Irene Battalion, Gypsy Company, Wrecker Platoon, Orion Squad." She said as she took cover from a Hail of fire and switched to her Rifle and used the Full Auto Function to send a hail of lead in the Tyranids' Direction.

"Huh…. wait, Say that name again." Mephiston asked as Sarah stopped firing as she kept her head down.

"You mean Irene? She's my grandmother, Why?" Sarah asked puzzled as she tossed a Grenade into a pack of melee oriented Trynaids the explosion tore a bloody hole in their ranks.

"You're the Descendent of Irene…" Mephiston muttered as he fought with renewed vigor and bellowed out orders to the Blood Angels.

"How the- Nevermind let's fuck these bugs up." Sarah said as she switched to Incendiaries and began firing at the 'Nids with the bullets, Igniting their bodies, It was at this moment that the overwhelming tide was too much and the Blood Angels plus Sarah retreated ever inward, But she heroically risked her life to save Blood Angels Astartes who are badly wounded by holding the creatures off with her weaponry, More than one Blood Angels Astarte swore she had the same fighting style as their Primarch which unknowingly to the Scions of Sanginius, Irene in great secret during the Great Crusade even though the Celestian Empire withdrew from the galaxy, fought alongside Sanguinius and imparted much of his fighting style onto her, Which was continued by Sarah even after her grandmother ascended to being the Goddess of the Celestian Empire's Successor The Terran Empire's Head Goddess.

"Watch that left flank!" Sarah shouted as she continued to fight before a Tyrnaid bioform knocked her helmet off, which landed right next to Dante, The Chapter-Master of The Blood Angels and as he spared a glance at her, He was stunned to see Sarah's face for the first time and the glare she gave the Bioform was one of hatred.

"You done fucked up, Bitch." She said coldly as her body suddenly glowed Purple and gold before anyone could react to what was going on, Sarah unleashed a devastating Psionic lighting from her finger tips, burning a swathe of destruction through the Trynaids as she took out a Revolver and Pistol and began to use both of them twirling her Pistols as she backed up and put her Revolver away and picked up her Helmet up, Shell casings dropped to the floor as Sarah when Switching mags put the used one in a pouch and slammed the new one into her weapon, Sarah also watched as 3 Space Marine Chapter-Masters were killed by the Aliens, Howling a cry of rage, Sarah struck hard, her aim was true and her litanies of hatred was much more intense than even the Blood Angels were amazed by how her blows were magnified sending bodies flying then at this crucial juncture the skies were ripped open as the Great Rift opens, Sarah stopped fighting for a brief instant and looked up.

"So…. the stories were true…. Chaos does exist in this universe… Damn it." Sarah swore under her breath as she non-chantilly used her shotgun to blow the head off of a Trynaid Warrior then all hell broke loose when the Tryanid Swarmlord entered the fray, slaying Transhuman Astartes left and right.

"Oh fuck off!" Sarah shouted as she ducked under the blow of the swarmlord and Dante also joined Sarah in the Battle Astartes and Demi-Goddess fighting side by side, The Swarmlord wasn't used to Sarah's method of fighting and She finally with Dante's aide slew the creature just as they were about to be overran as she aimed her pistol and blew the head off of a rampaging Gene-stealer and sliced the head off an Termagant, But the Trynaids went crazy and for Sarah it took all of her skills to not get cut to pieces.

Then the skies cleared and as Sarah looked up, Her helmet magnified the view: Starships both Terran and Imperium Warships she began to cheer as Artimech her personal fighter wing strafed the Tryanid foes, Followed up by her Forces' landing and Cobalt Blue hulled Drop pods and Thunderhawks arriving: The Ultramarines has arrived.

"There's the Princess!" Sarah heard Ice shouted as She waved to her troopers, The Tyranid Bio-forms were no matched for the Full fury of the Terran Armed Forces or the Wrath of the Adeptus Astartes, And as Terran Reaver Super-heavies blasted Carnifexes with ease, Space marines no matter if they are Ultramarine or Blood Angels watch in shock awe at the level of coordination between Terran Forces with their Officers barking orders out and NCOs leading their squads in-conjunction with their armored Vehicles, Even then… Roboute Gulliman the Avenging son noticed Sarah in the heat of battle, The Terrans have finally reached their Princess and The Tyranids trying to flee suddenly found themselves cut off and destroyed by the Terran 45th "Iron Guards" Tank Division and the 346th mechanized Infantry division…

Meanwhile in the Arx Angelicum, 3 hours after the Battle.

Sarah stood in her Royal regalia flanked by the Peregrine Guard, also present was Valerian and Sarah's Best friend and sister Vannessa.

Also Present was the Avenging Son himself Roboute Gulliman, Dante The Chapter Master of the Blood Angels also attended.

"So… The stories are true, You are the descendent of Irene, and Honoring the treaty laid out by Father Pre-Unification War and Pre-Imperium." Gulliman said as the Tac-pad She gave to him was read for it's content concerning the Treaty.

"Aye, Grandmother was stern about Chaos, In the many dicates she had made After the Civil War and Brothers War, She warned against the corrupting Influence of Chaos itself." Sarah said as she appraised her forces, Her 1st Corps has been deployed and the newly named Gateway system was now being heavily fortified by Her siblings 2nd and 3rd corps.

"I see… the timing of your people's return couldn't have been more fortunate." Gulliman stated as Sarah nods and stood up, and swore her Peoples' assistance against the enemies of mankind, As she does so, The Immaterium bristled with activity as the Chaos Gods suddenly felt the return of the Anathama's Ally, the Stage was set for the largest Conflict the Empire has ever participated in and The Imperium has a new ally one that will be forever against Chaos…

Hey Guys! So…. This is a rework of Stellarhammer, I wasn't happy as hell about the way it was going so… I made a new one, This one features an Alternate Universe where Sarah and Valerian hasn't had any Children yet, and her age is a huge indicator, And bear this in mind I wanna explain a few things:

Pre-Age of Imperium, Irene was out exploring the Milky Way Galaxy and stumbled upon Earth where she met Big E and the two of them formed a Sibling-like bond, When Irene revealed her Empire and she and the Emperor fought side by side in the Hellas Galaxy, The two signed an Alliance and an agreement on AI, only Irene and her Descendents that rules the Empire may use AI for it's needs, And on top of that, Grants a lot of immunities that the Terran Forces will use to great Effect in helping the Imperium.

Meantime, Stay safe and good luck all.