In a convenience store at a gas station, murders happen every once in a while. Is this a random event? Or a mysterious coincidence? After another murder, a genius mathematician finally discovered the secret to reversing fate, which is hidden in a string of numbers. He follows the mysterious digital clues to uncover the truth and try to save the next victim, a ten-year-old boy. But as the date of the warning letter approaches, does he still have a chance to save lives?