Our planet is warming up more and more. Drawing the diagram of the temperature based on the past 50 years’ data and continuing it for the future years shows us that, finally, Earth would become uninhabitable. To prevent this destiny, the scientists of Extajokar, an extremely developed planet distanced 300 million kilometres from earth, decide to rescue our planet by increasing its distance from the sun. This decision engages them with a huge project which lasts almost three centuries. Building a world 30 kilometres below the earth, transferring the inhabitants and creating a new lifestyle for them are parts of this project. The novel has many exciting scenes, but hitting the earth to change its orbit is the most dangerous one.