Larry and the time machine

A young boy who goes by the name of Larry discovered a passion for the future and building time machines, a passion which drove him to creating the world first ever successful time machine after a range of failed attempts. The key to this time machine was a mysterious stopwatch he had found with abilities he was clueless about, but little did he know, this great invention of his would come with grave consequences...ones he had never imagined..how would he fix the damage he had caused or was the damage irreversible..?

( Thank you Chan for the idea haha, all credits to you for the base of the story)