In the future, three Chinese astronauts, on their way back to Earth, encountered a complicated situation and lost contact with the ground. At the moment of crisis, they received an electronic signal, and their destiny will be completely changed by a mysterious code hidden in this signal.

The first maritime anti-terrorist film in China tells the story of the anti-terrorist personnel of the Chinese police who work closely with the Chinese Navy to finally end the crisis.

The film is set in 1949, as the members of the Central Committee of the Communist Party of China prepare to establish a new Chinese state, the People's Republic of China.