David Phillips (Patrick Macnee) is running down the darkened streets of London's Limehouse district, pursued by two men with guns. He finds a public phone and puts a call through to Dick Barton (Don Stannard), but before he can report, a shot rings out. Barton must piece together what Phillips found out that got him killed. Phillips had been assigned to protect Professor Mitchell (Percy Walsh) and his new development, a ray capable of exploding any unstable element aboard an aircraft in flight. Mitchell has been targeted for kidnapping by Serge Volkoff (Meinhart Maur), a foreign agent from Eastern Europe, as part of a larger, much more sinister plot to destroy England and cripple Western Europe. Complicating matters further is that Mitchell's daughter (Joyce Linden) has also been kidnapped, and Barton must contend with Volkoff's crafty female companion Anna (Tamara Desni).

1919 film by Fritz Lang

When we last saw Kay Hoog (millionaire adventurer, courageous hunk), he’d been beset with tragedy. Having escaped an ancient Incan city by the skin of his gleaming teeth, Hoog looked forward to a few years of settled life with his (amicably) captured Incan lovely, Naela. But the past struck quickly. Hoog’s arch-nemesis, the homicidal femme Lio Sha, murdered Naela on the very grounds of Hoog’s estate, prompting him to swear revenge upon her and her criminal organization, the Spiders. Now he must find them, as the Spiders continue their global quest for the Buddha-head Diamond. The head, it’s said, has the power to restore Asia to world dominance.

In San Francisco, well-known sportsman Kay Hoog announces to a club that he has found a message in a bottle with a map drawn by a Harvard professor who has gone missing. The map tells of a lost Incan civilization that possesses an immense treasure. Hoog immediately plans an expedition to find it. But Lio Sha, the head of a criminal organization known as the Spiders, is determined to get the treasure for herself and plans a rival expedition.

A young poet named Hoffman broods over his failed romances. First, his affair with the beautiful Olympia is shattered when he realizes that she is really a mechanical woman designed by a scientist. Next, he believes that a striking prostitute loves him, only to find out she was hired to fake her affections by the dastardly Dapertutto. Lastly, a magic spell claims the life of his final lover.

An American reporter falls in love with a Russian ballet dancer.

In the very old-fashioned town of Ostend suddenly 13 suitcases are delivered to the hotel, with a note, that O.F. will be here soon and needs 6 rooms (the hotel just has five). This event, probably the biggest in 300 years, starts a small wave of modernisation, yet everybody is wondering who O.F. is. Journalist Stix and architect Stark have an idea how to use this event. They proclaim, that O.F. is a former citizen of the town, who became a millionaire abroad. They tell their fellow citizens that the town still needs modernisation, like better hotels, nightclubs, shops, etc. And soon, Ostend is a boomtown, then a capital. The architect, responsible for the new buildings is finaly allowed to marry the mayor's daughter, while Stix marries the cabaret star and the widowed mayor his new secretary. The only problem is, O.F. hasn't shown up, while finance experts from all over the world are trying to solve the depression problem.