Shen Zhiyi, a 30-year-old financial elite, traveled back in time to the first day of high school when he was 15 years old due to an accident. With 15 years of life experience and memories, she met again the man who later became her husband: Lu Yanzhou.
But she discovered that reality was subtly different from the "past" she remembered. It turns out that Lu Yanzhou also carries memories of the future - he is a reborn person, not a time traveler. In the process of testing, suspicion, and getting closer, the two discovered that each other was "doing it over again."
The deeper truth is: their "rebirth" stems from an unspoken regret. In her previous life, Shen Zhiyi reunited with Lu Yanzhou and fell in love at the age of 28. They got married at the age of 30, but died in a car accident on the wedding night. Lu Yanzhou "restarted" the timeline in some unknown way, at the cost of shortening his lifespan by one year every time he was reborn.
This will be their last chance. If the ending cannot be changed in this life, the two will lose each other forever.