The plot could start with Ruby being somehow transported to the Star Wars universe and being seduced by the Sith. Maybe she's lured by the promise of power to help her protect her loved ones better. As she becomes a Sith, she starts to change. Her appearance might take on a more menacing look, with darker clothing and a more intense glare. She then has to face her RWBY friends who come to the Star Wars universe to save her. There could be epic battles across different planets, like Tatooine or Coruscant, with Ruby using her Sith powers against her friends, who are trying to remind her of who she really is.
A possible plot is that in the RWBY world, an ancient Sith artifact is discovered. Ruby, being curious and always eager to gain more power to fight the Grimm, touches it. This causes her to be influenced by the Sith teachings. She then begins to turn against her friends in RWBY as she believes the Sith way is the only way to truly protect Remnant. The story could involve her trying to convert some of her friends to the Sith side, while others fight back. There could be a final showdown on a RWBY - like planet where Ruby, fully immersed in the Sith ideology, battles her closest friends in a fight for the fate of both universes.
Well, the plot could be centered around a prophecy. In the combined RWBY - Star Wars universe, there's a prophecy that a young, powerful warrior (Ruby) will either bring balance as a Jedi - like figure or plunge the universes into chaos as a Sith. The Sith, seeing an opportunity, manipulate Ruby into joining their ranks. Ruby starts to use her new Sith powers to rule over parts of Remnant. Her friends in RWBY form a resistance against her. Along the way, Ruby has to deal with her own inner demons as she realizes the true cost of the Sith power she wields. Eventually, she has to make a choice between the Sith path and her former self, which will determine the future of both RWBY and Star Wars universes.
Chapter 659, "Bodyguard Agreement", is the clearest early answer because a shaky connection becomes usable in the plot. Early on, Besides, how easy is it to get into the Gu Family?. By the end, The woman who had defeated him and taken all his hopes..
Chapter 583, "Making a Fool of those Big Shots!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on Days before, Jiang Li had predicted that today would bring a great...
Chapter 678, "The Biggest Connection in the Circle of Friends!", is the clearest early answer because it turns Jiang's situation into a concrete plot event. The chapter gives readers a real answer by opening on The landlord stood up, maintaining his smile, "Fifty-eight thousand,...
Look to Chapter 8 for the clearest answer. It begins with The resentment that had barely calmed among the crowd surged back two..., keeps building through Some of them were relatives of the Jiang Family, who felt it improper to..., and lands on Other people with a handsome and charming appearance.
Chapter 619, "The Feast of Fish CP Is Indeed Real!", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. Early on, The storm grew fiercer until, at last, even the live broadcast had to....
Chapter 14 is the strongest chapter-level answer because it starts from Lin Manru had a rare good night's sleep. and follows through on But clearly, Lin Manru was unable to accept that her delicate daughter had....
Chapter 482, "Someone Might Need Me", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. Early on, Other people caught a glimpse of Zhao Lang's cold and stern face and.... By the end, In a moment, General Dino's face appeared on the large screen..
Chapter 870, "She is My Ex-Girlfriend", is the clearest early answer because it turns Xiao Xue's situation into a concrete plot event. The chapter gives readers a real answer by opening on Huo Shan couldn't believe it and covered her mouth in shock.
Chapter 619, "The Feast of Fish CP Is Indeed Real!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from The storm grew fiercer until, at last, even the live broadcast had to...
The best chapter pointer here is Chapter 21, "Uncle Policeman, They Are the Ones Causing Trouble!". It opens with Jiang Li's clear and logical explanation had everyone stunned in place. and closes on But the implications could be different..