After arriving in Texas to escape a scandal back east, lawyer Sam Houston just wants to hang out his shingle, keep a low profile, and stay out of any political intrigue. However, when President Jackson personally orders him to lead the fight for Texan independence, he overcomes his reluctance to become involved and leads his compatriots to a string of victories over the Mexican army.

Roman centurion Marcian is captured by Attila the Hun en route to Constantinople, but escapes. On arrival, he finds the eastern Roman emperor Theodosius plotting with Attila to look the other way while the latter marches against Rome. But Marcian gains the favor of Pulcheria, lovely sister of Theodosius, who favors a united Empire. As Attila marches, things look bleak for the weakened imperial forces. But the conqueror has an awe of the power of the Christians' God...

The electronic engineer Dr. Cal Meacham is a prominent scientist that is studying industrial application of nuclear energy and also a great pilot. One day, he receives a different condenser and soon his assistant Joe Wilson receives a manual instruction and several components of a sophisticated machine. Carl and Joe build a communication apparatus and a man called Exeter contacts Carl. He tells that Carl has passed the test assembling the Interocitor and invites him to join his research. The intrigued Carl decides to travel to meet Exeter that sends an unmanned airplane to bring him to an isolated facility in Georgia. He is welcomed by Dr. Ruth Adams but she mysteriously does not recall their love affair in the past. They team-up with Dr. Steve Carlson and they note that the other scientists in the facility have been transformed, having a weird behavior. They decide to flee in a car, but they are attacked by rays and Steve dies. Carl and Ruth also witness the facility blowing-up and ...

Marcellus is a tribune in the time of Christ. He is in charge of the group that is assigned to crucify Jesus. Drunk, he wins Jesus' homespun robe after the crucifixion. He is tormented by nightmares and delusions after the event. Hoping to find a way to live with what he has done, and still not believing in Jesus, he returns to Palestine to try and learn what he can of the man he killed.