After a car accident, Shen Xingchen awakens to find his soul transported three years into the future, inhabiting the body of his twin brother, He Yuchuan. Now living under a false identity, he faces constant tests from his former lover, Jiang Muyi. As they work together to uncover the truth behind the accident and reveal a deeper conspiracy, their love story finds a new beginning.
Lu Fanfan, Liu Ruochen's nutritionist, falls for him but is rejected. After resigning and moving into her own place, she mysteriously travels back in time and meets Liu Ruochen as a 20-year-old.