One idea could be that Elrond travels back in time to the First Age to prevent a great tragedy. He uses his knowledge and wisdom from the Third Age to change the course of events. Maybe he stops a powerful weapon from being created that would later cause destruction.
One possible plot could be Elrond traveling to different eras in America. He might end up in the colonial era and witness the struggles of the early settlers. Maybe he uses his elven knowledge to help them with things like medicine or building more efficient shelters.
If Elrond travels back to the First Age, he could meet Fëanor. This would be a very interesting encounter as Fëanor was a great and complex figure. Their meeting could lead to a clash of ideas, as Fëanor was often headstrong and Elrond is known for his calm wisdom.
He could meet Native American tribes. Elrond would be intrigued by their unique cultures and spiritual beliefs. He might exchange knowledge with them, like sharing elven tales in return for learning about their hunting techniques.
A third idea is that Connor time - travels to a post - apocalyptic world. Here, he has to use his survival skills and assassin training to help the remaining survivors. He could also try to find a way to restore the world to its former state, all while facing new and dangerous threats.
One idea could be a modern-day historian who accidentally travels back to the Versailles negotiations after WW1. They could try to change the terms of the treaty, knowing the long - term consequences it had. For example, they might attempt to make the reparations more lenient on Germany, which could potentially prevent World War II.
One idea could be a person accidentally discovers a time - traveling device in an old attic. They go back in time to the Middle Ages and have to adapt to the harsh living conditions while also trying to figure out how to get back to their own time.
One idea could be a character who accidentally travels back to the dinosaur era. They have to figure out how to survive among the giant creatures while also trying to find a way back home. Maybe they discover a strange device that brought them there in the first place and must reverse its function.
Emotional hurt is also popular. This could involve things like heartbreak, betrayal by someone he trusts, or the weight of his long - lived experiences and the losses he has endured over the centuries. It makes for some really deep and angsty stories.
Some title ideas for a time travel story are 'Time Warp Adventure'. It's simple and straight - forward, immediately telling the reader that there will be an adventure involving time warping. 'Chronicle of Time Travel' sounds like a historical account of someone's time - traveling experiences, which could be really interesting. 'Time's Portal' is also great as it makes the reader wonder what lies beyond this portal of time.
A group of treasure hunters find a map that not only leads to a hidden treasure but also has the power to send them back in time to the era when the treasure was hidden. They end up in the time of pirates and have to navigate the dangerous world of piracy to find the treasure and get back home.