"If the water's too clear, there won't be any fish left in the pond." Chief Inspector Chen has been dreaming about a trip to America for a long time. And now the poet policeman is to accompany a delegation of writers to the USA. But this unique opportunity is more than unfavorable for Chen. Because he has received an order that actually requires his full deployment in Shanghai: After the death of a policeman in a brothel, the highest party authority obliges him to finally put a stop to the "Red Rats" - corrupt officials and neo-capitalists who pay bribes. But already during the first research Chen has to find out that he will have to deal with influential party cadres who are not afraid of nothing ...