Yu Chen, a 28-year-old biological researcher, traveled back to 1995 during a laboratory accident and met his parents when he was young and the mysterious female scientist Su Huaijin. When he tried to change the fate of his mother who died of illness three years later, he triggered a chain of time crises. Pursued by the Time Administration, the two discovered that their fates had long been entangled with each other, and they had to make a painful choice: repair the timeline and sacrifice their loved ones, or let the world collapse.
Intention: Find a way to continue love amidst the regrets that cannot be changed.