Perhaps the dead civilization held the key to a great power that could save Remnant from a new threat. The RWBY team could go on a quest to uncover the secrets of this civilization, facing various challenges along the way, like ancient traps and guardians left to protect the secrets.
Maybe a rogue scientist from the dead civilization who was experimenting with dangerous powers and was thought to be dead. But now he has returned with a vendetta against the living, seeing them as unworthy of the knowledge he believes is his.
One idea could be Kirby arriving in Remnant and being mistaken for a new type of Grimm at first. Then, as the characters get to know Kirby, they realize his unique abilities can be a great asset in battles against Salem's forces.
One idea could be that the RWBY team decides to start a new workout routine to improve their combat skills. They face challenges like over - training and have to find a balance. Another could be a character - specific story, for example, Yang working out to overcome an injury and regain her strength. Or perhaps the team trains with a new instructor who has very unorthodox methods.
A possible plot for 'rwby the incredibles fanfiction' is that Syndrome from The Incredibles teams up with Salem from RWBY. Syndrome offers his advanced technology to Salem in exchange for her help in getting revenge on the superhero community. The RWBY characters and the remaining Incredibles then have to find a way to stop this unholy alliance. They might start by training together to combine their different skills. Ruby could teach Dash some new acrobatic moves, and Elastigirl could show Blake how to use her flexibility in combat more effectively.
Well, a possible plot for 'naruto in rwby fanfiction' is that Naruto is mistaken for a new type of Huntsman. He then has to prove himself in the Beacon Academy. Along the way, he befriends Team RWBY and Team JNPR. He could introduce his ninja techniques to combat classes, and they could incorporate some of his strategies into their own fighting styles. For example, Weiss could use Naruto's ability to walk on water to create new ice - based attacks.
One idea could be exploring the backstories of the characters in more depth. For example, how Ruby got started on her journey before the main events of RWBY. Another could be creating alternate universes where the characters have different abilities or roles.
A plot could involve an esports competition where teams from different kingdoms in the RWBY universe compete. The story could explore how the RWBY team overcomes rivalries and strategic differences. They might also have to deal with a mysterious hacker trying to disrupt the tournament.
One idea could be Noctis arriving in the RWBY world and having to learn about Dust and how to use it in combat. Maybe he teams up with Team RWBY to fight against a new type of Grimm that his unique skills are well - suited to defeat.
One idea could be a mercenary who is hired by a mysterious client to steal an ancient relic from Beacon Academy. He has to navigate through the various defenses and teams of Huntsmen and Huntresses.
One idea could be a new student arriving at the school with a mysterious power that no one has seen before. This could cause both excitement and suspicion among the other students.