The Skull

In "The Gun", a group of space explorers are shot down above a deserted planet. While some of the crew work on repairing the ship, the remainder set out to investigate the planet. Otherwise unpopulated, they discover the huge gun that shot them down sitting atop a trove of cultural artifacts from a bygone civilization. What harm could come of dismantling the gun and taking a few of the artifacts home with them?

In Mr. Spaceship, humans in the distant future are at war with alien life forms known as Yuks. Using outdated mechanical machines to wage war against the life-based weapons of the advanced Yuks, a research team decides to build a spaceship powered by a human brain. Enlisting a dying professor who agrees to donate his brain to the project, the humans believe they have turned the tables on the Yuks. But the spaceship has other plans.

In The Defenders, the Soviet and American survivors of a nuclear holocaust have created vast underground tunnels, so as to continue the war on the surface via remote control robots. When a robot from the surface is found not to be radioactive, a team of American scientists returns topside to investigate this anomaly. Expecting to see massive devastation, the scientists are unprepared for the shocking truth that awaits them.

In "Beyond the Door", a man buys a cuckoo clock for his wife who has always wanted one. When he catches her cheating on him, the man throws his wife out of the house with her lover. Though he never really cared for the clock, he keeps winding it because he dislikes the silence. But the cuckoo clock, who preferred the wife's company, begins to plot against its owner.

Ten-year old Tony Rossi, an Earthman growing up on Betelgeuse, becomes aware that the natives, known as the "Pas-Udeti", are driving out the Earthmen colonists on nearby Orion. His father, a staunch believer in the superiority of Earthmen, describes Tony's native friends as "Beetles". A trip into town to meet his native friends leads to awkward encounters with a Pas-Udeti cab driver and a fellow bus passenger.