The Earth Space Base has captured a set of mysterious signals, and scientists believe that the signals come from other civilizations in the universe. In order to explore alien civilizations, Captain "Yuan" drives the interstellar spaceship, Deep Space, and leads the entire ship's 93 crew members and the intelligent robot "Qi" to the universe and embark on a journey to the stars. But soon after, the spaceship mysteriously disappeared. 150 years later, the Deep Space spaceship suddenly appeared near the Earth's orbit, and there was only one surviving dormant on board, she was Captain Yuan's lover "Yin". The human space department set up a temporary committee to investigate and question Yin, and the thrilling experience of "Deep Space" slowly unfolded.