In the bustling metropolis, there lives a completely unknown cartoonist Fujinuma Satoru (played by Fujiwara Tatsuya). He makes a living by working in a restaurant every day, but he has a strange ability hidden under his ordinary appearance. He always inadvertently enters the state of "re-screening", that is, when an accident is about to happen, he enters the time and space reverse flow for a short time. Only by solving the key points of the accident can time pass smoothly. After the car accident, his mother who lives in Hokkaido came to Satoru's apartment, but soon his mother was killed by someone breaking into the house. Satoru entered the "re-screening" while evading the police, and unexpectedly returned to his elementary school days in 1988. At that time, a fellow town named Hinazuki Kayo (played by Suzuki Rio) was killed by a serial killer, and Satoru's most trusted big brother Shiratori Jun (played by Hayashi Kento) became a suspect. As if to prevent the tragedy from happening that year, Satoru returned to the origin of all tragedies...