The story follows Satoru Fujinuma, a man who somehow possesses an ability that sends him back in time moments before a life-threatening incident, allowing him to prevent it from happening. When his mother is murdered by an unknown assailant, Satoru's ability suddenly sends him back eighteen years to when he was still in elementary school, giving him the opportunity to prevent a kidnapping incident that took the lives of three of his childhood friends, two classmates and one young girl studying at a school nearby.
http://www10.soul-anime.us/watch/boku-dake-ga-inai-machi-episode-1/
