This is a 54 card set.
Earth has a visitor called Klaatu (Michael Rennie) who has arrived with a message. He is accompanied by a powerful robot called Gort. However, Klaatu is deemed to be hostile and goes undercover among Humans to learn more about them. He meets Helen (Patricia Neal) and her son Bobby (Billy Gray) who show him not all humans are violent. Klaatu then shows his power by draining the world of energy. The military finally kill him but he rises from the dead to warn mankind to mend their ways. 
The story of the movie is told on the reverse of each card.
A 9 card movie character set is also available.