When the moon in the night sky was replaced by a huge metal star ring, 48 randomly selected "survivors" around the world fell into an endless loop called "Star World".
Here, human nature is quantified into stars, and life is mortgaged to rules. The Twelve Star Guards sit in the temple and take pleasure in cruel astrological games. As a psychological profiler, Gu Changye was shocked to find out after waking up that he was pregnant with the "thirteenth constellation" that had been erased from the zodiac - Ophiuchus. He must lead a group of teammates with their own evil intentions amidst repeated betrayals and calculations, and "leave a way out" for mankind in the fatal logical loopholes.
But he soon discovered that the outcome of every game seemed to have been written countless times before.
Just when he was about to open the door to the ultimate truth, Gu Changye discovered a skeleton on the ruins of the temple. In the palm of the skeleton, he actually held a bloody note for help written by himself...
