Detective Catbug

(hi uh this is a story I wrote some of my friends into please don't sue me because the main character is copyrighted hahahaksjskdhskd)
A man who can see into the future with visions in his dreams, finds out something terrible will happen to an important artifact of his city, and that a time traveler is out to steal it.
Him and his team will go through a journey to stop the traveler from getting the diamond, and to find out who exactly they are...
But is that really the case?