The Book That Saved the Earth
The Martian Invasion Plan
Set in the twenty-fifth century, a Historian reveals that a Martian invasion in 2040 was stopped not by weapons or missiles, but by a single book. The play flashes back to Mars Space Control, where the arrogant and bulbous-headed Great and Mighty Think-Tank plans to invade the "primitive ball of mud called Earth" before lunch. He contacts his manned space probe—consisting of Captain Omega, Lieutenant Iota, and Sergeant Oop—who have landed on Earth and taken shelter in what appears to be a square storage barn containing thousands of peculiar items. In reality, they are standing inside the Centerville Public Library.
The Great Sandwich Misunderstanding
Completely unfamiliar with books, Think-Tank first deduces that they are in a refreshment stand and that the books are "sandwiches", the main staple of the Earth diet. To prove his point, he forces poor Sergeant Oop to take a bite out of a book, which Oop confirms is as "dry as Martian dust". Noodle, the intelligent apprentice, gently corrects his commander by suggesting they might be communication devices. After trying and failing to hear anything from the books, Think-Tank ultimately decides they are for "eye communication" and orders his crew to swallow intelligence-boosting vitamins to decipher the "code" contained within a large volume of nursery rhymes.
The Terrifying Nursery Rhymes
The book they decipher is none other than Mother Goose. As the crew reads the innocent rhymes, Think-Tank completely misinterprets them as grave threats. "Mistress Mary" convinces him that Earthlings have discovered how to combine agriculture and mining to grow high explosives and rare metals. "Hey diddle diddle" leads him to believe Earthlings have taught their domesticated animals space techniques and might launch an "interplanetary attack of millions of cows". The final straw is "Humpty Dumpty"; seeing the picture of the egg-shaped character, Think-Tank screams in terror, believing it is a picture of his own "Great and Mighty Balloon Brain" and that Earthlings are coming to capture him. Terrified, he cancels the invasion and orders his entire fleet to evacuate Mars and head for Alpha Centauri, a hundred million miles away, successfully saving Earth.
Key Figures
Think-Tank
The arrogant, egg-headed Commander-in-Chief of Mars. He considers himself the most intellectually gifted being in the universe but is actually incredibly foolish, prone to jumping to wild and paranoid conclusions.
Apprentice Noodle
Think-Tank's subordinate. He is the true brains behind the operation. He skillfully corrects Think-Tank's ridiculous mistakes without offending his boss's massive ego, eventually replacing him as the wise ruler of Mars.
The Probe Crew
Captain Omega, Lieutenant Iota, and Sergeant Oop. They are highly obedient soldiers who blindly follow Think-Tank's bizarre orders—even chewing on book covers—out of fear and loyalty to Mars.
Themes to Remember
Pride and Arrogance
Think-Tank’s massive ego makes him blind to his own ignorance. His constant need to be "never wrong" ultimately leads to his panicked downfall.
The Power of Books
The play humorously celebrates the 20th century as the "Era of the Book." It shows how human culture—even something as simple as nursery rhymes—can be deeply powerful.
Misinterpretation
The entire plot revolves around the comical consequences of misreading context. Think-Tank takes whimsical, nonsensical poems literally, turning a children's book into a terrifying military manual.
