Aspiring young detective Xiang Li Xiqi takes on the case of a stolen research paper at school. With help from his friend Ren Shirou, he investigates a web of clues and classmates’ suspicious actions. As doubts rise, Xiang must rely on his sharp instincts to uncover the truth and prove himself.

A woman's long-lost son, kidnapped by a demon years ago, returns and the subsequent strange events reveal a shocking, long-held conspiracy.