1992年,哈尔滨731陈列馆工作人员小金在整理史料时,发现这段历史的记录残缺不全,为寻找真相,他踏上了一场跨越数十年的跨国取证之旅,逐渐还原出那段被尘封的黑暗岁月真相。故事采取双时间线叙事,镜头回到日军侵华期间的哈尔滨,通过几个当事人的视角,深刻揭露日军731部队残酷的人体实验和泯灭人性的暴行,鞭笞日本军国主义的反人类本质,凸显中国人民坚韧的抗争精神。
当犯罪学家Tankhun声称自己是他的初恋时,记者Botpleng开始怀疑自己的记忆。在好奇心和不确定性的驱使下,Botpleng着手揭开真相。是他的记忆有问题,还是他的过去被什么东西——或者什么人——扭曲了?Botpleng, a reporter, begins to doubt his own memories when Tankhun, a criminologist, claims to be his first love. Driven by curiosity and uncertainty, Botpleng sets out to uncover the truth. Are his memories faulty, or has his past been twisted by something—or someone?