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.
A plot could involve a team competition at the school that goes awry due to a hidden traitor within one of the teams. The story could then focus on the other teams trying to figure out who the traitor is and how to deal with the situation. For example, they might have to work together in unexpected ways to overcome the challenges posed by the traitor's actions.
Perhaps there could be a fanfiction where the school is hit by a strange magical phenomenon that starts to change the students' semblances in unpredictable ways. The students then have to figure out how to control their new or altered powers while also dealing with the potential chaos that it causes in the school environment. This could lead to interesting character development as they adapt to these changes.
One idea could be a sports competition at the high school. The RWBY characters could be on different teams, like Ruby on the track team and Weiss in a fencing - related sport. They compete against other teams from different 'kingdoms' in the high school world, which adds an element of rivalry and teamwork.
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 tournament where characters from both universes participate. It would be exciting to see Naruto's ninjutsu against RWBY's weapon - based combat skills. Another is a story where they have to team up to stop a common enemy that has the ability to disrupt both their worlds, like a powerful demon or an ancient evil.
Well, in RWBY tournament fanfiction, a great plot could be a tournament that is a test for the characters to prove their worth to gain access to a secret training ground. This training ground is said to make a person extremely powerful. The tournament could have different challenges like not only fighting battles but also solving puzzles or surviving in a dangerous environment. The characters would have to balance their combat skills with their problem - solving abilities, and it would make for a really exciting fanfiction.
One idea could be Grimlock arriving in the RWBY world during a major Grimm invasion. His brute strength and unique abilities could turn the tide of the battle, creating an alliance between him and the RWBY team. Another plot could involve Grimlock being mistaken for a new type of Grimm at first, leading to some initial conflicts before they realize he's an ally.
One idea could be a tournament - style story where different teams of RWBY characters compete in a multi - player battle arena. Each team could have unique strategies based on their members' abilities.
One idea could be that the characters from RWBY and Ben 10 universes team up to fight a common enemy that threatens both their worlds. For example, a powerful alien race in the Ben 10 world that has somehow found a way to access Remnant (the RWBY world) and is causing chaos.
One idea could be that the ring has some sort of magical power that disrupts the balance of Remnant in RWBY. Maybe it gives the wearer the ability to control Grimm in a different way. For example, instead of just attracting them, it can make them do specific tasks.
One idea could be a crossover where the Titans characters end up in the RWBY world and have to adapt to the Grimm and Huntsmen system. Maybe they team up with Team RWBY to fight a new, powerful Grimm that's causing chaos across Remnant.