Second Jerry Cotton movie. A ring of gangsters has been terrorizing New York City. Special agent Jerry Cotton is summoned by the FBI to help crack down on the Criminals and put them out of business. He doesnt pull any punches either.

Rival gangs are fighting for control of Hamburg's notorious harbor district, spreading fear and terror in the process. In the streets, houses and clubs, the thriller shows the lives of a handful of people whose fates will be decided within 24 hours.

At his uncle’s behest, the young Karl-Heinrich, Hereditary Prince of Saxe-Karlsburg, is sent to Heidelberg to study for a year. After a joyless youth in the gloomy, stately Karlsburg Castle, the prince embarks on the most carefree period of his life. He falls hopelessly in love with Käthi, the charming daughter of his landlords. But duty calls: the prince is gravely ill, and Karl-Heinrich must return to assume his duties as heir apparent and future ruler.

A German expedition is in the African jungles on an unidentified misson. During this mission one of the German explorers, Thoren, is attacked and captured by the local natives called the Botos.

In a district of a small, German principality, things are going haywire. And this, even though Baron von Wehrhahn, who is loyal to the prince, does everything possible to make “his Highness” popular. The only problem is, he’s always using his zeal on the wrong crowd. He always seems to see free-thinkers or revolutionaries in the harmless of citizens; but the really bad ones get to go on their way unmolested! For example, the old woman Wolff: she steals everything that isn’t nailed down, while her husband pursues unhampered poaching.

Student Helene moves to Berlin to write her doctoral thesis. In the laboratory of her doctoral supervisor, the renowned Professor Matthias, she meets the charming Dr. Stefan Rainer. Helene falls in love with him, unaware that Stefan is already having an affair with Matthias′ wife Yvonne.

Tom Finberg and Nick Dorland, two highly competent divers working for the Caribbian Oil Company, have been the best friends in the world since the day they met. But this wonderful friendship is endangered by their falling in love with the same young woman, Juana, the young owner of a hacienda. Worse, following a misunderstanding, generated by the belle's scheming uncle, Pedro de Alvarado, the two men fall out with each other. But when Tom is trapped under the surface of the burning ocean, Nick finally comes to his rescue.