Splendor Films

An American agent discovers that the Red Chinese have built a secret atomic city from which they will attempt to invade America.

In order to persuade the Emperor to spare his village, the mighty Ursus is forced to fight the greatest gladiator in Rome in the Roman Arena.

Estrella is a lively girl who works as a cleaner neighborhood and who lives in a modest apartment in Santa Coloma with her boyfriend. His joy and optimism contrasted with adversity around him, especially with the difficult times being experienced co-worker.

The evil King Zagro has designs on the beautiful Princess Sira. He wants to marry her so he can take over her kingdom and add it to his own. When Sira is kidnapped, Ursus leaves his farm to rescue her and to eventually lead a revolt against King Zagro.

The mighty Gladiator is captured after freeing the misguided emperor's daughter. The girl surrenders herself for his freedom but is again freed by the Gladiator.