Thread:JoxFox2109/@comment-4708882-20190306105752/@comment-29414935-20190514171425

No worry.

I don't know if you are good in writing time travel stories, but it's very new for me, I never really do these things in my stories. But it's the first time now in the sci-fi fantasy story. But the problem is, I don't want to make plot holes and make it as logical as possible. I liked the way they do time travel in Avengers Endgame, but I don't want to copy that and go the more "classic" way. So I explain how I plan it. The ultimate villain succeed in killing every living being in the universe and commited omnicide. So the only survivors are the both best friends of the hero. They survived because one of them was shrunken into dispear and the other was in an hollow asteroid outside the edge of the universe,  where it can't affect. After 3 years, they both meet on earth. In the meantime the one of them on earth got insane because he was alone for that time and wandering around earth, without any living creatures and the other one was driving through space, trying to find anyone alive and back to earth and look if someone survived. So both meet again and have just one option left. The scientist and best friend of them (also the mentor of the evil scientist), who was killed by the ultimate villain at the beginning of the part before that, had worked on a time machine that wasn't finished. So they need more robotic parts for it. Their only option is to travel to the future in 100.000 years. So they do that and see in what hellish place the ultimate villain turned the universe and the new population of it. After they have done it, they travel back to the present and work on the time machine. After this is done, one of them is travelling back to a specific time before the ultimate villain wins and the other activates the time machine. This is the only way they have a second chance and then their only chance left because they couldn't do it again.

But the thing is, I don't know at which point he is going to travel back, how far it is, before the villain wins. Can he travel back in time as far as he wants or is their a limitation? And if there is one, why is there one? Because I want not to make it like "they can travel as far as they want and can prevent anyone from dying". Because I want that the scientist stays dead, but can't he just go back before the time he was killed by the villain? It is very confusing and I need a conclusion for that.