When the retired police dog briquettes picked up the first human bone, the dusty chemical plant explosion case resurfaced;
When provocative text messages and curse marks appeared one after another, the "shadow" organization behind them gradually revealed its fangs.
From university laboratories to underground puppet workshops, from twisted "eternal beauty" to transnational bio-black technology;
Su Wan and Shen Yuheng continued to get closer to the truth while chasing the murderer, but they also fell into a deeper dark mystery.
