The three friends Kim, Marie and Franzi solve exciting and puzzling www.yuankan.cc detective cases while going about their everyday lives as teenagers. Her cases range from fraud to theft to extortion and also cover issues such as cyberbullying and social justice. But there is also a big mystery waiting for the three junior detectives, which covers all cases and which has to be solved. 　　 　　译文(3): 金、玛丽和弗兰兹三个朋友解决了令人兴奋和困惑的问题www.yuankan.cc青少年时期的侦探案件。她的案件从欺诈到盗窃再到勒索，还涉及网络欺凌和社会正义等问题。但还有一个大谜团等待着三名初级侦探，它涵盖了所有案件，必须解决。