It tells the story of Ouyang communicating the details of the case with Mai Jie through WeChat and learning that Hong Bin was arrested. Professor Duanmu revealed that he is MJ and planned a meteorite theft case. He searched for smart players to help salvage the meteorite through the online game "Chamber of Secrets" and selected Midori. He admits his mistake and is willing to accept legal punishment. Midosi expressed willingness to help Professor Duanmu. The extracurricular detective team and Ouyang Yanyan returned with the police to bid farewell to the 'Bingguo'. Ma Weika and Ou Muqi discussed going home and rehearsing 'Cinderella'. The captain announced the start of the sea voyage.