One mistake will lead to three years of resentment. Nine years of deep love, unrequited love? A shocking case that shocked the whole city, 47 people died in an instant. Why did the murderer commit the crime? How does facility crime occur? What was the motive for the crime? How do you kill 47 people without being noticed? Why are there so many dead but no one calls for help? How much resentment was there to kill so many people at once? What is the connection between that incident three years ago and this case? Why did the former sunshine beauty SWAT transform into the iceberg queen? Will everything come to light after all these years? See how Bingshan solves the case and achieves success with a sinister person.