After the unexpected death of the heroine of the original book, Jiang Yin inherited Conan's physique and was frequently involved in murders. originally planned to eat and wait for death, but she unexpectedly became the suspenseful protagonist of "killers everywhere". In order to find out the truth about the death of her parents, she began to approach Yan Li, the servant of the Criminal Department, and used various means to try to unravel the mystery.