Ghira, Kail and Adam Taurus,alongside the white fang,the huntsman, and Raven Branwen and her bandit tribe fight off the immense hordes of Grimm accumulating at Beacon as well as the gargantuan Grimm Dragon. The beast sweeps near the ground and incinerates a group of White Fang soldiers with it's purple colored fire breath, instantly reducing them to charred skeletons.
"Damn i don't know if we can hold out any longer with that thing in the sky" Adam said
"We just have to until the Atlas forces get here just hang in there everyone" Ghira said
"He's right, if we quit now we are all gonna die!" Raven said
In the barren desolate Grimm overrun city of Vale. Salem has imprisoned Team RWBY Jaune, Winter, Sun Oscar and Qrow in a bizzare net like slimy black substance. Nora and Ren's corpses lay motionless and battered on opposite boulders in the distance. Their lifeless eyes still lay open. An army of Grimm composed of Beowolves,Ursai,and several Tiger like Grimm watch the losing battle from afar. Salem then brings all four of the relics to a dark black wooden pedestal with slots each shaped precisely as their relics to use there awesome magnificent power to summon the unstoppable god of darkness. Ozpin then assumes control of Oscar's body to attempt to talk sense into the dark mistress.
"Don't do it Salem!, you cannot begin to comprehend the great evil you will unleash." Ozpin said
"Oh Ozpin always trying to find ways to save yourself taking countless lives with you in the process, and hiding inside the body of a child well no more no longer" Salem said unmoved by Ozpin's futile pleas.
"At least Ozpin isn't pure evil like you, you're a monster!" Ruby said
"You complement me Little Rose, it's such a shame a child like you got sucked into all this pain. But you all still choose to suffer despite the odds so suffer you will" Salem said
She then places the relics onto their respective spots. The items suddenly start to glow an uncanny purple. Lightning then starts to spark illuminating the blackened sky temporarily with each bolt. Hulking beats of thunder follow with each stroke.
"I have waited several millennia for this day. Say goodbye Ozpin!" Salam said
"This is not good" Winter said
A purple portal then starts to manifest as a hole appears to be ripped and warped into reality itself the void inside seems to be infinite and constantly expanding. A tall male figure leaps from the portal and lands on his feet. The portal gradually closes away shortly afterward.
The unknown figure is wearing purple form fitting battle armour with red portions covering his center mass, his forearms, as well as his right thigh which appear to resemble flesh. He also has curved silver spikes protruding from his shoulder,with several more on the stomach area of his armour and an additional pair protruding from his elbows as well.
He is very tall potentially 6 or 7 feet in height with a lean but well built frame. He also has pale white skin with shoulder length flowing black hair and dark purple eyes.
"No, it., it can't be" Ozpin starts to tremble and shake with fear.
"Oh it is and it will" The god's deep powerful voice seems to expand across the entire area sending chills to everyone's spines.
Salem stands in awe of the mighty god She kneels to her knees before him.
The others struggle to grasp the magnitude of what has been presented before them all.
"I cannot believe it, the god of darkness in the mortal realm once more, how may i serve you?" Salem said
"It's been so long Ozpin and i see now i'm going to have to clean up your mess, a mess i now realize i should've cleaned myself long ago."
The dark god then conjures what appears to be a spherical purple ball of pure energy the size of a basketball in his right hand and flings it towards Salem.
"This is impossible, NOOOO!""
Salem is then instantly disintegrated into a pile of purple colored ash by the powerful energy ball. Ozpin and the others proceed to look on in shock and fear.
"What the, what are you?" Winter muttered in fear."
"I have many names human filth, but you all may call me, Nightmare in the brief moments that remain in you." Said the God
"Fitting" Qrow said
Nightmare then frees them all from their prison via his telekinetic abilities.
"Why did he free us?" Sun said
"He, wants to fight us before he kills us". Ozpin said continuing to quiver in fear.
"And don't think i'm gonna finish you quickly either so who wishes to die first?" Nightmare said tapping his left foot.
"Your as twisted inside as Salem, full of hatred, well no more you've dug your own grave." Ruby said
"Hum arrogant girl do you really think you can defeat a god?" Nightmare said
Yang and Ruby then walk towards the god. Yang pumps her Ember Cecilia and Ruby cocks her Crescent Rose as they stand in front of their friends and family.
"Your gonna see what us mortals can do." Yang said
"And your gonna pay for what you did to Ozpin." Qrow said
Everyone then equips their weapons ready to fight for the fate of Remnant itself. Ozpin then starts to regain his confidence despite his fear as he walks towards Yang.
"If we don't survive this conflict I am proud to have been your headmaster." Ozpin said
"Me too Professor but your not just our headmaster your our family." Yang said
"And friend, best friend" Ruby added
"Thank you" Ozpin smiled a slight tear running down his eye for the first time in possibly several centuries.
Yang Ruby Ozpin and the others all charge toward the seemingly unstoppable god.
"If you all wish to die a warrior's death who am i to decline?"
Nightmare flies towards them and conjures two purple and silver daggers each with long 10 inch blades with purple streaks of energy flowing through them.
Nightmare attacks Ruby first which she only manages to detour two of his hits before he slashes her to the ground, depleting a portion of her aura.
"Ruby!" Weiss said
She then switches her Myrtenaster dust vials to ice and spins, a cyan light is then followed by a wave of ice when she strikes it into the ground, sending a flurry of ice towards Nightmare.
The ice however simply shatters on the god's armour not affecting him at all in the slightest
"Thanks it was getting quite hot anyway" Nightmare then punches Weiss away sending her flying.
Winter, Qrow ,Blake and Yang then all attack Nightmare he responds by blocking their attacks with a purple telekinetic shield resembling Jaune's.
"Did you not fully learn from the last futile attempt to defy me?" Nightmare said
He then jumps into the air and rapidly kicks them all to the ground.
'Enough! " Ruby launches herself towards Nightmare via Crescent Rose with Ozpin following suit. Nightmare then fuses his daggers to form a moderately sized Katana with a black and purple hilt with black string wrapped around it with the same purple energy streaks. He proceeds to block Ozpin's cane and Ruby's Crescent Rose with his sword.
"So the old hag must've told you about your silver eyes did she?" Ruby
Nightmare slashes his divine sword pushing Ozpin and Ruby back
"What's it to you* Ruby asked
"Your mother and the rest of your Sliver Eyed kind were created by my brother for only one purpose, to defeat me in the case he couldn't along with my children before our truce. So in a sense you are a living weapon" Nightmare said
"My god" Qrow said
"Silence" Nightmare shoots a lightning bolt towards Qrow's feet which makes him jump back behind Winter.
"His "children" are the Grimm right?" Oscar said subconsciously
"Well since i wasted my time explaining it all, i'm gonna have to make your deaths extra slow and painful." Nightmare said
Nightmare conjures a smaller purple energy ball and throws it at Weiss.
Weiss stares at the ball terrified.
"Weiss look out!"
Jaune leaps towards her and grabs her into his arms as they both fling towards safety the ball narrowly missing them. Jaune lands square on his back.
"This brings back memories" Weiss said
"Yeah except we were flying thousands of feet in the air, not fighting a murderous god of evil." Jaune said which makes Weiss giggle
Weiss helps Jaune up a small chunk of his armour has been ripped off from the blast.
All of the battered fighters stand before Nightmare Winter uses Qrow for support from the extreme fatigue of the battle.
"Your all insects just waiting to be squashed, but before i do i will ensure that you all experience terror beyond your little imaginations." Nightmare said
"What do you mean?" Ozpin said
"You truly are a fool this isn't even my true form" Nightmare said
"What!" Blake and Sun said in unison.
"Yes this state as you see is merely a front to conserve my latent power, you maggots should consider yourselves honored you will be the first mortals ever to lay eyes upon me in my true state" Nightmare said
"No it can't" Blake said
"Your blasphemy has continued for long enough you spineless dogs!" Nightmare said
"We are in more trouble than we thought" Winter said