Vita is a rookie genius in psychological research. Her brain works as if there were a rapid generator in it. In fact, it is a gifted talent as a snail. Upon joining the police force, she is facing the fate of getting removed due to her weak physique. Since Officer Pla is the only one that can help her, Vita tries everything to make Pla take her in as his mentee. As the captain of the Police Investigators Team (PTI), Pla is one of the few brilliant, experienced, and skilled investigators. At first, Pla does not take a liking to Vita. Besides, both are not on the same page regarding how to deal with cases. However, having joined hands and solved a series of cases, Pla begins to fancy this innocent yet witty mentee of his. Alas, Vita, who is as dull as a snail, does not feel Pla's love. When the two of them are talking about love and cases, the spooky serial killer is back. Pla and Vita finally acknowledge their feelings toward one another in the face of danger. Pla has always been bothered by the Luger case, which has reopened. The lovers are once again joining hands to embark on an extremely menacing journey of catching the criminal....

Chai Xiaoqi, who was an alien girl from the "Cape Town Planet", lost her signal and had to stayed on earth. She encountered an overbearing boss named Fang Leng who was suffering from the "rainy weather heterosexual amnesia", and he would forget the females around him. A hilarious and romantic cross-star love story since then started. Chai Xiaoqi was not only an alien, but also a true-handed witch. Once she inhaled the hormone emitted by males on the earth, she would fall into "flowery state" and met many funny things after that. In order to survive on the human earth, Chai Xiaoqi used her various super powers to solve one accident after another....

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....