港口城市江州，南城分局刑偵隊女副隊長王若楠和臥底警員邱天聯手破案，卻發現了隱藏在案件背後的江州黑勢力大哥劉東涉嫌販毒的案情。為偵破此案，已可歸隊的邱天孤身繼續臥底，決意搗毀劉東集團。此行動務必極度保密，王若楠成為了邱天的唯一聯絡人。邱天臥底劉東組織，經歷懷疑，靠著英勇機智，獲得了劉東的信任，成為組織內的重要人員。邱天受命保護被劉東威脅的、知曉自己警察身份的前女友李菲菲和她的現任丈夫、藥品企業家周志國。邱天得到參加交易毒品的機會，但警方連續兩次抓捕行動，都被內外因素破壞，邱天也幾乎暴露。此時劉東背後的秘密供貨人卻浮出水面。邱天為查找毒源，違背王若楠的指令，帶劉東潛逃。邱天賭博式的舉動，卻得到驚人的真相：原來周志國才是真正的幕後黑手。面對這起勾結境外，制毒、販毒的重大毒品犯罪，最終，邱天和王若楠一起將罪惡之源斬斷於江州。
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | September 2016 | October 2016 | 40 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 40 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 40 |
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