Fight Back to School III

Stephen Chow is back as police officer Chow Sing Sing. This time, he is sent to investigate the murder of millionaire Million Wong, to whom Chow has an uncanny resemblance, by posing as Wong himself.
Chow Sing-Sing returns, only this time he doesn’t go back to school. Instead, Chow goes undercover as the husband of a wealthy socialite, which doesn’t sit well with his fiancée, who tries to convince Chow to quit working as undercover.