This book tells the story of Bubulu's unusual identity sparking considerable opposition during the entrance exams. The dean decides to give Bubulu, Selena, Jiaozi, and Diqi a real preparatory student assignment—to serve as security personnel at the Primal Auction, ensuring the safety of the Titan Stone. Legend has it that the world's hardest and most precious Titan Stone was taken from one of the most famous monsters in the material world—the giant "Titan," who is the guardian deity of the magical city of Augustus. When Bubulu and his friends unexpectedly arrive in Augustus, they gradually uncover another side of this wealthiest nation—the prince of Augustus lives in a sewage-filled garbage dump and even kneels before them, begging for mercy. To save Augustus from its peril, Bubulu and his companions venture into the "Deep Black Mine," where they discover a painful secret.
本书讲述了：在之前的入学考试中，布布路的特殊身份引发了不少反对。院长决定给布布路、赛琳娜、饺子和帝奇一次真正的预备生任务——担任原始拍卖会的安保人员，保障泰坦原石的安全。据传说，全世界最坚硬、最珍贵的泰坦原石是从物质系里最著名的怪物之一——巨人“泰坦”身上取下的，而泰坦巨人是魔都奥古斯的守护神。当布布路一行人意外来到奥古斯，却渐渐揭开了这个最富有的国家的另一面——奥古斯的王子居然住在污水横流的垃圾场里，竟然还对着他们跪地哀求。为了拯救危难中的奥古斯，布布路一行人踏入了“深黑矿井”，等待他们的却是一个沉痛的秘密。
本书讲述了：在之前的入学考试中，布布路的特殊身份引发了不少反对。院长决定给布布路、赛琳娜、饺子和帝奇一次真正的预备生任务——担任原始拍卖会的安保人员，保障泰坦原石的安全。据传说，全世界最坚硬、最珍贵的泰坦原石是从物质系里最著名的怪物之一——巨人“泰坦”身上取下的，而泰坦巨人是魔都奥古斯的守护神。当布布路一行人意外来到奥古斯，却渐渐揭开了这个最富有的国家的另一面——奥古斯的王子居然住在污水横流的垃圾场里，竟然还对着他们跪地哀求。为了拯救危难中的奥古斯，布布路一行人踏入了“深黑矿井”，等待他们的却是一个沉痛的秘密。
