Sergeant Brock and Goldie are American Korean War veterans now serving as French Foreign Legion mercenaries in the First Indochina War. Brock's wife is a "half caste" Chinese Eurasian named "Lucky Legs" who resorts to smuggling to feed her five-year-old son she had with Brock. Brock abandoned her and the baby when he was born with Asian features, feeling a "half breed" would not be welcome in America; an attitude towards miscegenation prevalent at the time. Lucky is recruited by the French high command to use her expert knowledge of the area and her friendship with the communist Major Cham to get a demolition squad of Legionnaires led by Brock to a vital hidden Viet Minhammunition dumpon the border with Red China. In return for her services, Lucky is promised by the French that they will arrange for her son's emigration to America. The raid is filled with animosity between the former lovers, booby traps, and enemy patrols. On arrival at the ammunition dump hidden in a mountain, Lucky discovers the commanding officer is her former friend Major Cham, who wants to take her and her son to a new life in Moscow. Cham is a high flyercorporate executive marked for great things in the world of international communism. The sabotage mission is successful but at great cost; Lucky dies blowing up the dump. Brock reconciles with his child and is last seen walking along holding his hand in preparation for returning to America, as Goldie reprises the title song.
Production
Fuller selected singer Cole after being impressed with his face on a recordalbum cover. Though Darryl F. Zanuck said Cole received more money in a few weeks than the entire budget of the film, Fuller arranged to meet Cole. Cole and his wife were interested in Goldie as an opposite to the racist Brock and agreed to work at a minimum salary. An actual Eurasian actress playing a love interest opposite a white European star was a rarity in Hollywood at the time. Dickinson proves attractive to Brock, and to mainstream audiences of the time. Her character is allowed to express Fuller's view on race relations and is respected both by the French military and by a local priest whose life she had saved.. The dangerous patrol allows for a gradual change of heart for Brock.
Soundtrack
China Gate was the last score Victor Young composed; the film was finished by his friend Max Steiner. Harold Adamson wrote lyrics to Young's beautiful theme for the film. Though originally not intending to sing in the film, Cole sang China Gate as he walked through a bombed out village followed by Brock's little son, making it a memorable tune and a fitting tribute to Young.
Banned in France
Before China Gate was to be released, Fuller received a call from the French Consul-General in Los Angeles, Romain Gary, inviting him to lunch. Gary said the film's prologue was too harsh towards France and asked Fuller to change it. Fuller refused, but the two became firm friends with similar interests. The film was never released in France. Many years later, Fuller filmed a story of Gary's, White Dog, that Fuller and Curtis Hanson adapted for the screen.