(200k special) (This is set in the Star Wars Legends timeline and includes the canon Clone Wars)
The Mother. The God of Chaos. Abeloth. A being so unnaturally infused with the Dark Side that even the Sith feared her. Her debilitating Force Psychosis warped and twisted millions around her into mindless slaves to her will, and even her subconscious power could kill and decimate.
She had set herself up on Coruscant, declaring herself Empress to her hordes of puppets. Abeloth was approaching the peak of her power, and the legendary Luke Skywalker could not stop her alone. If she wasn't killed or sealed away soon, she would succeed in her thirst for intergalactic domination.
Luke was left with one last option: create a Force Storm and hope for the best. The Grandmaster nearly died from the effort, but he created a massive tear through space and time, followed by sending a psychic wave of knowledge, a distress beacon, into the opening. Any from across the galaxy's history who heard the call realised the threat of Abeloth, a threat that dwarfed the many wars between empires and Force users of old.
Luke would be incapacitated on Tatooine after using so much power, and he knew Abeloth would sense it. Luckily, everyone who had heard the distress signal started to walk out onto the desert sands outside the long abandoned Lars homestead. Ships, whether they be Venator Star Destroyers, Mon Cala Cruisers, Harbinger Star Destroyers, Munificent Frigates or Starfighters like ARC-190s or TIES or X-Wings, appeared in the evening sky above. Help had arrived, and the presence of all of the Light and Dark Side Force was almost overwhelming.