Description: Nine-year-old detective Ai Xiaopo, whose case-solving skills have skyrocketed, and alien Ji Feifei, who's rebuilt his spaceship to return to Earth--the two traverse the cosmos, reuniting as the Pocket Detective Alliance to crack life's mysteries with scientific knowledge! Inside the exhibition hall, the famous "Thunderbolt Warrior" figurine has vanished without a trace. Yet both suspects give identical testimonies--who is lying? Ai Xiaopo and his classmates discover a decades-old letter in the library, revealing a crime warning written in coded text! They must decipher the clues hidden within the library's books within fifteen minutes...
