Through three tales of impossible machines with abilities to manipulate the physical world, travel through time and space, and bestow telepathy onto an entire community, candidates of an engineering exam in the far future are asked to ponder fantastical implications of technology.

In an alternate Great Depressions NYC, a Jewish foreman investigates the true outputs of his factory as his eccentric German employer seeks to use an emerging idea called "industrivism," or the improvement of the human body through technology, created by a bored pulp writer, to recruit workers to fulfill his machinations. Without realizing, a pulp writer in an alternative 1920s New York City invents the idea of "industrivism" that earns her an audience with an eccentric German businessman. Meanwhile, a Jewish foreman investigate the true purpose of the factory and unearths his employer's dark past and future machinations.

An elderly Chinese engineer reflects the time he spends working on obsolete space craft in relative isolation.

While recovering from a serious illness, a ninety-year-old scientist wades through his patchy memory, piecing together fragments of images and emotions from his childhood as an immigrant in the once-moving American 1940s. He thinks about his admiration for airplanes, which have been outlawed in this alternate history. He considers how such scientific advancements can also bring about great destruction.

On a train ride to a metallurgical conference in Chicago, a consultant tries to avoid the debate between pure and applied sciences, but he cannot avoid it when he gets cornered in the washroom by two professors and an undecided bright new recruit.

All his life, a man creates machines to compensate for his idiocy, but, over time, the machines he creates lose respect for him and treat him poorly, causing him to lose all hope. A single machine opens his eyes to the idiocy of others, changing his perspective and giving him back hope and joy.

Days after announcing an invention that will change the fabric of his futuristic world, an inventor goes missing and two detectives must find out where he is and what his supposedly groundbreaking invention was.

When a serial writer decides that he can’t take more of his monotonous life, he destroys his copywriter and leaves his domestic prison to protest the rise of the machines.

When it is discovered that the human brain is key to interstellar travel, one impoverished tradesman must decide whether to sacrifice the wonderfully wise, but ultimately artificial, eagle brain residing inside a beautiful humanoid shell or his own. A desperately poor tradesman realizes his humanoid friend, a charming artificial intelligence, is the key to faster and more lucrative interstellar travel. But to achieve this, he must pry her brain from her body and risk killing her.

In a dystopic future on Earth, as a woman comes home from vacation, she hears about a continent emerging from the sea as old ones sink, and returns to find her husband released from Rehabilitation Camp. He and his fellow researchers discover how to make a “sun tap” to channel the sun’s energy into power, but then he is again forced away by the government, into a hospital.