A stone with magical powers is found in the jungle by Professor Forrester and his assistant. With this stone in their posession they can gain control over the world. But the stone does not bring these two good fortune. In fact, the assistant dies and Professor Forrester goes missing in the jungle. When news of the stone spreads many people are interested. Lord Kingsley (Walter Rilla) of Scotland Yard sends out his top agent, Jane (Susann Korda) to find Professor Forrester. Rex Forrester (Fred Williams), a relative of the Professor, joins her on the mission. In the village of Akasava near the jungle Doctor Thorren (Horst Tappert) and his wife (Ewa Stroemberg) run a medical practice for the locals. Thorren knows a few things about the mysterious stone but is baffled as to the whereabouts of the Professor. As the different parties embark on their quests to find the stone, a series of thefts, muggings and murders are committed. Rex tells Jane he is actually a secret agent and together the two fight to bring the culprit behind all the mishaps to justice. But before they can, another death will occur because of the lust for the stone. Will this be the last victim?