Two Chinese astronauts, while being ordered to explore outer space, accidentally entered a "wormhole" and came to an unknown Earth-like planet. Here, they were surprised to find that there were humans with the same skin color and language as them! As a result, a series of ups and downs stories emerged around the exploration of the origins of these humans, the resulting legacy or return to Earth, the battles between countries on the planet, the battles between humans and humanoids on the other side of the planet, and the secret battles between ambition and intrigue...