What is this is device?

A group of 8 students go back in time to 1982 throughout 2009 to save the only king that had live in the past in his career achievements. When Michael Jackson meets them what will happen if they don't ever go back but have to travel in order time to meet the other Michael era's? Will Michael ever realize that a special girl will be there when he had been through many harmful things that took place in one of them?