Invisible Target is a 2007 Hong Kong action film that pits three police officers against a ruthless gang of seven criminals led by Tien Yeng-seng. Each officer has a personal vendetta against the gang: Chan seeks revenge for his deceased fiancée, Fong was humiliated by Ronin leader Tien, and Wai's brother was killed in a botched undercover operation. As they hunt down the gang, alliances are forged and broken, and the lines between loyalty, duty, and morality become increasingly blurred, culminating in an explosive showdown at the Police Headquarters that will decide who lives and dies.