The softer side of legendary action director, Ringo Lam, finds Koo (Alan Tam) en route to his engagement party, during which he narrowly avoids running down a young girl, Siu Yu (Joyce Ngai). Later that evening, the girl dies anyway, as the result of a household accident. Her wandering spirit contacts Koo through a ouija board and eventually decides to take residence at his apartment, leading to a romance between man and ghost.
