Hong Kong police officer Li Zhongzhi (played by Louis Koo) learned that his daughter Zhi (played by Hannah Chan) was mysteriously missing while traveling in Thailand, so he went to Thailand to call the police for help. Cui Jie (played by Wu Yue), the Chinese detective in charge of the case, agreed to let him investigate together, but he did not expect that Li Zhongzhi would use the media to appeal to the public to provide clues. An unexpected shot...