The film was written and directed by Ting Shan-hsi and starred Jimmy Wang Yu, Angela Mao, George Lazenby, Judith Brown, Ko Chun-hsiung, Charles Heung and Dean Shek, whom also serves as the film's assistant director.

During Queen Elizabeth II's visit to Hong Kong in 1975, a group of criminals plan her assassination.

Taiwanese director Ting Shan-hsi was hired by Golden Harvest off the back of his successful film, Everlasting Glory (1974).

[1] It was the last of three films George Lazenby made for Golden Harvest, the others being Stoner and The Man from Hong Kong.

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