A really interesting plot twist could be that in the time - travel, Luffy and Zoro switch bodies. This would lead to a lot of comical situations as they try to adapt to each other's abilities. Zoro in Luffy's body would have to deal with the stretchy powers, and Luffy in Zoro's body would have to handle the three - sword style. It would also create some unique battle strategies as they fight enemies.
One possible plot twist could be that Luffy and Robin travel back in time to the Void Century. This would open up a whole new world of exploration as they discover the true history of the world. They might encounter the Ancient Kingdom and learn the secrets that have been lost for so long. It could also put them in a dangerous position as they might be hunted by the World Government who wants to keep that history buried.
One exciting plot twist could be Ahsoka traveling back in time to the Clone Wars era and changing a small but crucial event. This could lead to a completely different outcome for the Jedi Order. For example, she might prevent a certain Jedi from being sent on a mission that ultimately led to their downfall. This would then ripple through the timeline, changing relationships within the Order and the overall course of the war.
One exciting plot could be that Teddy and Lily travel back to the time of dinosaurs. They have to survive in a world full of giant reptiles and strange plants. They might discover new species that were not known before and their knowledge about dinosaurs could help modern science when they return to their own time.
Another idea is that they time - travel in a loop. Every time they go back in time and change something, it creates a new future, but then they get sent back again because the change wasn't enough to break the loop. They keep meeting different versions of their friends and enemies in different time periods. It's a never - ending cycle until they figure out the key to break the loop and return to their normal time with a better understanding of how their actions can shape the future.
One possible plot twist could be that Whitebeard actually kidnaps Luffy to protect him from a greater danger that Luffy is unaware of. Maybe there's a powerful enemy lurking in the shadows that Whitebeard knows will target Luffy soon, so he takes this extreme measure to keep him safe in his own territory.
One possible plot twist could be Goku traveling back in time to the Saiyan - Planet Vegeta era. He could try to prevent Frieza from destroying the Saiyans. This would completely change the course of the Dragon Ball story as we know it, with a much larger Saiyan population and different power dynamics.
Luffy's carefree and adventurous nature would make him eager to explore the new time period. He'd probably jump into any situation without much thought, which could lead to both trouble and amazing discoveries. For example, he might accidentally disrupt an important historical event because he's so excited to see what's going on.
A great plot twist could be reincarnating into a character who was thought to be dead in the Batman fanfiction world. Let's say you become the second Robin, Jason Todd, who has come back to life in a different form. This would shock Batman and the other characters. You could have new powers or a different perspective on justice, causing a rift and then a new alliance within the Bat - family.
Another exciting plot could involve Peter Quill traveling to different points in time to collect powerful artifacts. Maybe he discovers that these artifacts, when combined in a certain way, can give him the power to defeat a great evil in his own time. Along the way, he meets different versions of his friends and enemies from various timelines.
One exciting plot twist could be a character from the Naruto universe who travels back in time to the Jedi universe and discovers they are actually a long - lost Jedi descendant. This completely changes their understanding of their own powers and heritage.