My manuscript was gone under review in one of the repute SCI Journal, but unfortunately it was rejected. Thereafter, my manuscript was continously rejected from other journals also. The reason I found now is 11% plagrism was coming from one research paper. As I studied the source paper from which plagrism was coming, I saw and I shocked that the content/text was copied as it is what has written in my submitted manuscript. I concluded that the reviewer who has reviewed my paper has copied my content/text and published his own paper during my paper's reviewing time and after completion he has rejected mine. Please suggest what to do in this case. Thank you.