In 2020, after the colonization of the moon, the spaceships Vega, Sirius and Capella are launched from Lunar Station 7. They are to explore Venus under the command of Professor Hartman, but an asteroid collides and explodes Capella. The leader ship Vega stays orbiting and sends the astronauts Kern and Sherman with the robot John to the surface of Venus, but they have problems with communication with Dr. Marsha Evans in Vega.

Renowned for his excess, King Henry VIII (Charles Laughton) goes through a series of wives during his rule. With Anne Boleyn, his second wife, executed on charges of treason, King Henry weds maid Jane Seymour, but that marriage also ends in tragedy. Not one to be single for long, the king picks German-born Anne of Cleves as his bride, but their union lasts only months before an annulment is granted, and King Henry continues his string of spouses.

Queen Christina of Sweden is a popular monarch who is loyal to her country. However, when she falls in love with a Spanish envoy, she must choose between the throne and the man she loves.