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.

When a rare phenomenon gives police officer John Sullivan the chance to speak to his father, 30 years in the past, he takes the opportunity to prevent his dad's tragic death. After his actions inadvertently give rise to a series of brutal murders he and his father must find a way to fix the consequences of altering time.