In 2099, Earth's ecological environment is deteriorating day by day, natural disasters are occurring frequently, and traces of aliens are being detected by humans again and again. To improve Earth's environment, ensure the continuation of human civilization, and fulfill their mission to protect Earth, the International Alliance decides to send the Hope, a spacecraft carrying the hopes of humanity, into space to explore. It will continually collect information on planets suitable for human habitation and on advanced intelligent life beyond Earth. The story follows the Hope spacecraft, led by Wen Cheng, as it overcomes all kinds of difficulties and encounters countless dangers on its journey through the universe.
