"Only mother is good in the world, and a mother's child is like a treasure!" The eerie melody sounded in his ears again. A special childhood experience kept appearing in Lian Cheng's dreams. As a criminal police officer, he decided to re-investigate a murder case that occurred in 1994.
Who would have thought that with the passage of time, the real murderer would have disappeared into the vast sea of people.
Concept: Bad people will always be bad people.