When they discover that the 200-carat "White Fire" diamond is within their reach, brother-and-sister diamond smugglers Bo (Robert Ginty) and Ingrid Donnelly (Belinda Mayne) set their sites on the gem in this low-budget exploitation flick. But when Ingrid is killed, Bo and his other partner in crime must convince another woman to take her place in their scheme. Meanwhile, other thieves are determined to take the same jewel for themselves.