This drama is set in 25th century. A historian in the museum is telling the story about 20th century; the century of the books. He tells how a book saved the earth from Martian invasion. The invaders from Mars consider themselves too intelligent for the earthlings. They think they are superior race than the inhabitants of the earth. There is a megalomaniac commander who commands the team of the invader. Various members from the invaders’ team enter a library. They are unable to identify what a book is. They make several wild guesses, and finally arrive at the conclusion that it must be a communication device for the earthlings. They try to decode what is written in the book. The book is full of nursery rhymes. Their encoding tells them that earthlings must have been on a mission to attack the Mars. Fearing that, they immediately leave the earth and fly away to the distant Alpha Centauri.