省昆虫研究所毒理昆虫学专业研究生谭景天无意中卷入一桩离奇的案件，死因竟与一种罕见的虫子——子弹蚁有直接的关系。谭景天为洗脱“罪名”协助警察破案，并因此与年轻女法医金灵产生交集。谭景天在昆虫专业上的造诣和金灵精准的法医分析相得益彰，配合刑警队长陈悍及诸位刑警共同寻踪出每个案件的草蛇灰线。谭景天与金灵以及刑警队诸位警察一起完成了“美洲大蠊案”、“微刺盲蝽案”、“磕头虫案”、“多眼灰蝶案”、“梭毒隐翅虫案”等案件的破解。在此过程中，谭景天也解开了自己的身世之谜，揪出了隐藏多年的幕后真凶。

The police are investigating a case that involves a death directly caused by a rare bug known as the bullet ant. In order to clear his name, Tan Jingtian, an Insect toxicology graduate becomes involved in the bizarre investigation and collaborates with forensic doctor Jin Ling. As they dig deeper, they uncover the mystery behind his own identity. Along with police captain Chen Han and the other detectives, they trace every clue as they solve one case at a time to uncover the murderer that has been in hiding for many years.

Η αστυνομία διερευνά μια υπόθεση που αφορά θάνατο που προκλήθηκε άμεσα από ένα σπάνιο ζωύφιο γνωστό ως μυρμήγκι σφαίρα. Για να ξεκαθαρίσει το όνομά του, ο Tan Jingtian, ένας απόφοιτος της τοξικολογίας εντόμων εμπλέκεται στην παράξενη έρευνα και συνεργάζεται με την ιατροδικαστή Jin Ling. Καθώς σκάβουν βαθύτερα, αποκαλύπτουν το μυστήριο πίσω από την ταυτότητά του.

Bộ phim kể về câu chuyện một nghiên cứu sinh ngành Độc học Côn trùng Đàm Cảnh Thiên vô tình bị cuốn vào một vụ án ly kỳ. Trong quá trình giúp cảnh sát phá án anh đã nảy sinh tình cảm với bác sĩ pháp y Kim Linh, đồng thời khám phá ra bí ẩn về thân thế của mình, vạch trần kẻ đứng sau đã ẩn náu nhiều năm.