"Behind the truth" Content abstract: Hai Pi has gone back to school; he starts his detective journey again for finding out the truth because of the case of missing classmates in Happy County. He accidentally meets a beautiful cat burglar Fei Fei, which completely changes her life. The case of poisoning in Orchid Valley and the case of missing witch Miao Miao put Princess Piao Piao and duck Tang Tang under the spotlight. At this time, Hai Pi becomes calmer. He feels goodliness and bloodiness of the real world when he investigates cases. Finally he becomes a real great detective through love and harm. The author of "Behind the truth" is Hai Fei.