A pawnbroker is found murdered and police suspect that he was murdered by an acquaintance. Three people come under suspicion but all of them have perfect alibis. One year later, one of the suspects, the neighborhood woman is found dead and the murder case becomes even more mysterious. Almost fifteen years pass and the lead inspector reflects on the only case he could not solve in an otherwise successful career. Haunted by a sense of responsibility and guilt that he caused suffering by letting the murder case go unsolved, he decides to reinvestigate. His persistent search brings attention to the long forgotten case and reveals a hidden relationship between the victim’s son and the neighborhood woman’s daughter. As their love grows, more crimes happen. As their sin grows, the inspector’s chase comes closer to them.