I would like to give the first 2 chapters credit from, HISHE harry potter. After those, It is all my Idea.
"Professor, Going back in time to kill Voldemort as a child might not give you access to be able to come back." It was Hermoine's voice. She handed Professor Snape the time turner.
"Of course I know that, Granger." He said coldheartedly, "Now, Potter," he spat,"I need that cloak of yours."
Harry trembled brushing the cloak with his hand, the smooth fabric running under his fingertips, "But sir-" He was cut off by Snape, "Hand it over Potter!" He spat the last word. Harry handed the cloak over.
There was a long lasting time of quiet, then Ron broke the silence by accidentally blurting, "But sir! You will need to turn the time turner at least 17,892 times!"
"Then you better not have me lose count, should you Weasley?"he said heartlessly
"No, Sir."
That will take forever! How will we have time?"
"We?" Asked Professor Snape.
"Well, I just thought -"
"Well, obviously you thought wrong! 1...2..." Snape turned the time turner
17,890 turns later
"17,891...17,892. Got it! I Got it! Goodbye world! Haha! I'm coming for you.