Although the title is the same, this film is not related to the 1953 White Fire by John Gilling, except for their mutual interest in diamonds. Beau (Robert Ginty) and Ingrid (Belinda Mayne) are siblings who were raised by Sam (Jess Hahn) after they were orphaned while very young. Now all three are involved in smuggling diamonds, a successful enterprise thanks to a security officer at the mines who is willing to look the other way for a price. Even though all three are ostensibly after a famous 2,000 carat diamond known as White Fire, the plot suddenly flip flops, and Ingrid is killed. Her brother meets a woman who agrees to undergo plastic surgery and replace Ingrid -- and lo and behold, she is converted into Ingrid's twin, and their covert diamond business can continue. In the third or fourth plot detour, Beau then falls in love with his sister's look-alike, and shades of incest are not so subtly cast over their liaison. Eventually, the different threads weave their way to an inevitable ending.