A hardened underworld mastermind perishes in a violent disaster, only to awaken inside the small body of nine-year-old schoolboy Wesley. Eager to leave his criminal background behind and lead a respectable life, he discovers that his devoted older sister Vivian is a struggling junior detective overwhelmed by unsolved homicide cases.
When an impossible locked-room murder strikes their apartment complex, Wesley employs his sharp understanding of forensic science and underworld psychology to guide Vivian toward the truth. While feeding her subtle analytical clues without blowing his childlike cover, Wesley must outwit a cunning serial predator threatening his new household.
