The body found in the ancient well turned out to be that of another girl who was kidnapped 21 years ago and has not yet been found.Who is the person on the phone?What's the purpose?Yousen, who was manipulated, felt at a loss.Hirayama, who had just been found innocent by the world, could not face this shocking fact calmly, and even more shocking information reached Qiansha...

What is the truth about the incident 21 years ago?After their strong ideas and justice intersect with each other, the ending waiting for them is——.