秦风收到唐仁的消息，来到纽约参加自己和阿香的婚礼。唐仁在机场十分豪气的接待了秦风，十分招摇。等秦风来到“婚礼现场”才知道自己是被唐仁骗来参加有五百万奖金的世界名侦探大赛，大赛的内容是找出杀死唐人街教父七叔孙子的凶手。秦风知道自己被骗了，生气的要离开现场，但是去呗华人刑警陈英吸引，加上唐仁的苦苦哀求，秦风决定留下来看情况。经过介绍，他们知道七叔的孙子死法十分离奇，并且为了寻找凶手设下了高额悬赏。他们在调查的同事发生了另一个案件，作案的手法相似，但是原本被锁定的凶手却有不在场证明，让秦风也摸不到头脑。紧接着第三起第四起案件也逐渐出现，秦风抓住真凶后，才知道这个完美结案的背后其实隐藏另一个谜题

After receiving news from Tang Ren, Qin Feng came to New York to attend his wedding with Ah Xiang. Tang Ren received Qin Feng very proudly at the airport, very ostentatiously. It wasn't until Qin Feng came to the "wedding scene" that he realized that he was tricked by Tang Ren to participate in the World Famous Detective Contest with a prize of five million. Knowing that he was cheated, Qin Feng wanted to leave the scene angrily, but he was attracted by the Chinese criminal policeman Chen Ying, and Tang Ren begged hard, so Qin Feng decided to stay and watch the situation. After the introduction, they knew that Uncle Qi's grandson died in a very strange way, and set a high reward for finding the murderer. Another case happened to their colleagues who were investigating, and the method of committing the crime was similar, but the murderer who was originally targeted had an alibi, which made Qin Feng puzzled. Then the third and fourth cases gradually appeared. After Qin Feng caught the real culprit, he realized that there was actually another mystery hidden behind this perfectly closed case