The earth has entered the "dark age" due to the depletion of resources. The protagonist is the last batch of "stardust messengers", shouldering the mission of finding "migratory and livable signals" in the universe. This is a one-way exploration-if no signal is found, it will float forever. In space.

Rocket launch is the last hope of mankind. When the tail flame cuts through the atmosphere, the warm light in the ground command center is the final connection between the protagonist and the earth. In the lens passing through the clouds, the cold blue sky light leaked from the cracks in the clouds indicates the loneliness of the road ahead. The giant planet is a "candidate habitable planet". The protagonist stares at the porthole of the space station, his eyes full of thoughts for his home and heavy tasks. The extremely deep depth of field of the cold blue star sea reflects the insignificance of human beings in the universe. When floating in zero gravity, the protagonist reaches out and touches the arc of the earth, which is the final farewell to his native land. He decides to put down his obsession and push forward the task with all his strength. When passing through the planetary belt, the spacecraft detected a weak signal, but encountered the debris group left by the ancient interstellar war, the spacecraft was damaged, and the signal source became clearer. The protagonist discovers that the signal comes from the "native light of the universe"-that is the energy barrier of the livable planet. He takes off his spacesuit and steps into the light with his back to the lens, implying "to light up the way home for mankind with individual sacrifice". The moment when warm light swallows cold blue is the completion of redemption.