The evil Dr. Mabuse develops a death ray with which he threatens the world.

Didier Formenter, the French scientist, has just put the final touch on an invention that will be able to destroy to destroy any sort of flying apparatus. An international crime gang is very interested in stealing this equipement to sell it to the higher bidder of lawless nations. Menaced, the scientist, who was friends with Nick Carter's father, calls Nick for help. At Nice airport, Nick Carter escapes death, but that night he is unable to stop Formenter's murder. He suspects Bruno, Formenter's adoptive son, and Tonio, the owner of a bar near Formentier's home. Bruno is actually after Formenter's heritage, and for that he tries to kill Catherine, Formentier's granddaughter. Therefore, Nick Carter finds himself against more than a gang, but he will uncover the plots, in time to break every gangster apart.

Samson must rescue a beautiful Chinese princess from a marauding horde of warriors.

Seetha and Harold Berger are rescued from the desert by a caravan and brought to a small village. However, the greedy owner of the house where they are lodged betrays the law of hospitality and reveals their location to Prince Ramigani. The couple tries to escape but is hunted and captured by Ramigani and his men. Meanwhile Irene Rhode and her husband Walter Rhode suspect that Maharaja Chandra is not telling the truth about Harold's destiny. The conspirator Ramigani forces Seetha to accept to get married with Chandra to provoke the wrath of the priests and get the alliance of Prince Padhu and his army. In the meantime, Harold succeeds in escaping from the dungeon and seeks out Seetha to save her.

In Eschnapur, a German architect saves the life of the Maharajah's favorite temple dancer and becomes Maharajah's friend but their friendship is tested when the architect and the dancer fall in-love, triggering the Maharajah's vengeful ire.

Willy Ferrière is a gambler living beyond his means, and his mistress is as greedy as he's dead broke. One day, he says out of loud in a a Montparnasse café that he would give 100,000 francs to get rid of his wealthy aunt so he could claim his inheritance. Someone secretly lets Willy know it's a deal. The old lady is murdered, and a low-life criminal is manipulated to be the perfect suspect. But Superintendant Maigret feels something is wrong.

After an American Navy base is annihilated by a secret weapon, Agent OSS 117 is sent to Japan to investigate the organization that's claiming responsibility, and threatening the US with another attack, if they don't pay.