主人公侦探龙马镜拥有一个特殊的能力，就是自己如果接触到尸体或者是死人的遗物的时候，可以使死者灵魂的图像出现在自己的大脑中。这样能力使得他能够快速的破解各类案情。龙马镜和一个被别人夺走诺贝尔奖的高级科学研究所研究员组成搭档，一起破解案情找到凶手。他们各自利用自己的能力和经验来破解杀人案。然而，在破解案情的过程当中，所有的案件都指上了一本神秘的预言书，上面记载了某些人的死亡时间。而书上写的这些人就一定会在这个预言书上写的时间内死亡。两人一直想揭秘事情的真相，想知道这本预言书到底是怎么来的，是由谁来写，并且这些人为什么会在固定的时间内被杀。
The protagonist detective Long Majing has a special ability, that is, if he comes into contact with a corpse or a relic of the dead, he can make the image of the soul of the dead appear in your own brain. This ability allows him to quickly solve various cases. Long Majing teamed up with a researcher at the Institute of Advanced Science who was robbed of the Nobel Prize to solve the case and find the murderer. They each use their own abilities and experience to solve the murder case. However, in the process of cracking the case, all the cases pointed to a mysterious prophecy book, which recorded the time of death of certain people. And these people written in the book will definitely die within the time written in this prophecy. The two have always wanted to reveal the truth of the matter, wondering how this prophecy book came about, who wrote it, and why these people were killed within a fixed period of time
扣人心弦的悬疑剧情，令人着迷。《FLASHBACK》通过精心编排的悬疑剧情吸引观众的注意力。故事围绕着主人公的记忆追溯展开，观众随着他的调查和解谜一起发现真相。电影剧情扣人心弦，充满了意想不到的转折和惊喜，观众会被故事的发展紧紧吸引，一直保持着高度的紧张感。
演员的表演精彩出色。高梨临、成田凌、丰原功补和佐野史郎等演员在《FLASHBACK》中展现了出色的表演技巧。他们刻画出每个角色的独特个性和情感世界，使得观众能够真实地感受到角色的喜怒哀乐。演员们的精湛表演提升了电影的观赏价值，让人印象深刻。
打破时间维度的思考，引人深思。《FLASHBACK》不仅仅是一部悬疑电影，它还通过探索记忆和时间的概念，引发观众对人类意识和存在的思考。电影以非线性的叙事方式呈现，让观众思考时间的流逝对人们的影响，以及记忆对于人物命运的重要性。这种对于时间和记忆的探索使电影更加深邃且引人深思。
