It is a quiet and lonely night at the beach. The gentle splashing of seawater creates a sense of serenity. From afar, the sound of a motor being started can be heard. On board a speed boat, the back of a man is seen trying to start the engine, but it splutters and refuses to start. The man turns around to face a huge black plastic bag. The bag seems to contain a motionless body. Thereafter, the man gets off the speed boat and walks on the beach. He is getting some tools to fix the engine. A while later, the black bag moves. Suddenly, it is slashed from inside to reveal the sharp edge of a shard. The bag is slashed open and a girl emerges from it, gasping for breath and looking terrified… The girl undergoes a medical examination that confirms she has suffered sexual and physical abuse. Assistant Superintendent Zhou Jianfeng comes on the scene and meets Qiu Xueqing.