"The Moon Is a Harsh Mistress" is a science fiction novel by Robert A. Heinlein, published in 1966. The story is set on a lunar colony in the year 2075, where the inhabitants, known as "Loonies," struggle against the oppressive rule of Earth. The narrative follows a computer named Mike, a political activist named Manny, and a revolutionary named Wyoh as they plan a rebellion for lunar independence. The novel explores themes of freedom, self-governance, and the complexities of political systems. It presents a unique perspective on libertarian ideals and the challenges of establishing a fair society. The characters' interactions and the unfolding revolution highlight the importance of cooperation and sacrifice in the fight for liberty.