On the wedding night, night watchman Xie Linglan discovers that the bride Jiang Xuepo is not the mute woman as rumored, but a hidden witch doctor who can hear the sound of "time rifts". From testing each other, the two were forced to join forces to investigate the "Night Crying Syndrome" spreading in the city - patients will suddenly age by dozens of years. As the investigation deepened, Jiang Xuepo discovered that the "Silent Bloodline" that his family had guarded for generations was actually the fuse that caused the disaster, and Xie Linglan's true identity was the subjugated prince who was trying to restore the country. When the truth that Jiang Xuepo's blood can temporarily fill the time gap is revealed, Xie Linglan faces the ultimate choice: use her blood to stabilize the country, or destroy the country's restoration plan and save the only person beside him who can see through his disguise. It was finally revealed that all the disasters originated from a symbiotic curse caused by a betrayal between her ancestor and his great ancestor a hundred years ago. Only the fusion of their blood can end the cycle.
