板橋分局的「403小組」，簡育韋與王碩彥是對默契十足的搭檔。育韋年輕熱血、老鳥碩彥則是能夠完美達成績效數字的「摸魚大王」。 某日，兩人為求隔日安穩休假，小心翼翼地將浮屍用棍子「戳」到新莊分局的轄區。育韋卻發現自己的警察證遺失，四處尋找不到，只好求著碩彥在半夜潛入殯儀館，嘗試從冰櫃中的屍袋裡挖回那重要的證件。 親眼瞧見屍體，碩彥發覺這具屍體竟然已經用超乎常理的速度被解剖檢查過，而育韋之後也意外在自己證件的背面發現惡臭的藍色結晶。碩彥判斷這是一種新的毒品混合體，浮屍可能被作為人體運毒工具，之所以這麼快被解剖、甚至被作為無名屍火化，只因為幕後黑手要盡快湮滅物證── 平常奉行「多一事不如少一事」原則的403小組，該裝作沒看見地回歸日常庶務，還是選擇深入調查很可能涉案的警界高層，並迎戰事件背後那龐大複雜的金權勾結網絡呢？

In the ""403 Unit"" of Panchiao Branch, Jian Yuwei and Wang Shioyan are a perfect partner. But they are not the elite team of the Central Criminal Police Bureau that specializes in solving major crimes, they are nicknamed so because of their police academy numbers. The young and enthusiastic Yuk Wai, who has been working for three years, and the veteran Shuoyan, who is the ""King of Fish"" and is able to achieve perfect results, are constantly instructing Yuk Wai on how to do things the ""right"" way, so as not to be physically overburdened with the heavy tasks of a junior police officer. But his predecessor's behavior also makes Yu Wei's girlfriend Xiao Li unhappy, hoping that Yu Wei will not lose his sense of justice and enthusiasm for helping others. One day, the two of them carefully ""poke"" the floating corpse with a stick to the Xinzhuang precinct in order to have a peaceful vacation the next day. The two of them are on vacation for the next day, and they carefully poke the floating corpse with a stick to the Xinzhuang precinct. When he saw the corpse in person, he found that the corpse had been dissected and examined at an unnatural speed, and Yu Wei then accidentally found foul-smelling blue crystals on the back of his ID card. The reason why the corpse was dissected so quickly and even cremated as a nameless corpse is because the person behind it wanted to destroy the physical evidence as soon as possible - Should the 403rd team, which usually adheres to the principle of ""it's better to do more than less"", return to their daily business without seeing anything, or should they choose to delve deeper into the investigation of the senior police officers who are likely to be involved in the case, and confront the huge and complicated network of financial collusion behind the incident?