In order to track down the bio-criminal organization "Shadow Club", Chief Medical Examiner Lin Yan faked his death after being hunted down by a drug. He used the unfinished "shrinking potion" to transform into 17-year-old high school student Shen Zhou. He solved daily mysteries from a forensic perspective and identified the real culprit from microscopic evidence such as body hair, salt, and wound fibers. He also teamed up with policewoman Xia Xiaotang, technical geek Lu Xiaoman, and defected researcher Chu Ge to fight against the organization's pharmaceutical manipulation conspiracy. As the investigation deepens, Shen Zhou discovers that the ultimate boss of the Shadow Council is actually his uncle, and all cases contain key clues to destroy the organization. The foreshadowing of "The Night Owl is Not Dead" at the end adds to the suspense.
Purpose: truth first