After the death of Octavian, the rebel populations of Illyria and Pannonia pose a grave threat to the Roman Empire. Tribune Marcus Ventidius is sent to subdue the uprising and, after a bitter battle, captures Pannonian chief Magdus together with a number of women hostages. These include Magdus's own daughter Helen, betrothed to cruel Illyrian warrior Batone who has killed many Romans. Julia, daughter of the Roman governor Messala, is in love with Tribune Marcus and, jealous of his sympathy for the barbarian girl, plots an escape by Helen and her father. Pursuing the fugitives, Marcus crosses a mountain pass where Batone has laid a trap.

In the first half of the first century A.D., the Teutonic tribes, led by Arminius The Terrible, rebel against the cruel and conquering Roman Empire. In raging torments and blood curdling battles, the barbarian tribes and Roman Legions fight a war of attrition, so brutal and terrible that Arminius becomes a legend throughout the empire. Only Augustus, Emperor of Rome is evil and treacherous enough to enslave the Teuton barbarian and halt his murderous uprisings.

Carlo, a young photographer, is making love with his girlfriend at the beach when he witnesses a murder being feebly staged to look like a car accident. Carlo takes incriminating shots of the murderers (the victim turns out to be the local public prosecutor) and attempts to sell them to various interested parties, including a gangster and a newspaper owner. One of the murderers' accomplices, a lowlife criminal, is gunned down by a black-gloved assassin, while another is stabbed to death...

Moorish ruler El Mansuh is determined to locate a massive bell made of gold known as the "Mother of Voices." Viking explorer Rolfe also becomes intent on finding the mythical treasure, and sails with his crew from Scandinavia to Africa to track it down. Reluctantly working together, El Mansuh and Rolfe, along with their men, embark on a quest for the prized object, but only one leader will be able to claim the bell as his own — if it even exists at all.

A series of unexplainable accidents befall the people and companies responsible for developing the world's first supersonic airliner. A British agent is sent to investigate and with the help of another agent uncovers a plot masterminded by Carl Petersen who stands to gain eight million pounds if the aircraft is not ready by a certain date.