A suspect is caught red-handed in a murder but the seemingly open-and-shut case takes a shocking turn. A dogged prosecutor spends a decade investigating, sacrificing everything to uncover the truth behind the crime.

In the story of The Long Night, the suspect discarded the body after his murder but was unexpectedly caught red-handed on the spot in broad daylight. There were at least hundreds of witnesses on the spot and the suspect confessed everything about the crime process. The testimony of witness, physical evidence, oral confession and chain of evidence were complete. While the procuratorate had public persecution of the suspect officially, the case changed suddenly. What stunning crime was hidden behind? To seek truth, a procurator spent ten years investigating this and it cost him youth, career, reputation, family and even his life.