Twenty-seven-year-old Lin Zhixia is a well-known architectural designer in the industry, but she suffered a double blow at the peak of her career: a carefully designed landmark project was maliciously tampered with, and her boyfriend of three years suddenly broke up with her. After being drunk, she accidentally touched the "Star Track Wishing Box" she made with Su Yu in high school, and when she opened her eyes again, she was seventeen years old - that critical summer when she deliberately alienated Su Yu because of her low self-esteem.
With the memories and regrets of an adult, Lin Zhixia is determined to rewrite the ending: she no longer avoids Su Yu's eyes, actively joins his astronomy club, and even musters up the courage to help him complete the unfinished "Star Track Observation Report" that year. But as they got along, she discovered that Su Yu seemed to be hiding secrets - he would occasionally tell things that would only happen in the future, and the maturity in his eyes was far beyond that of a seventeen-year-old.
As the points of college entrance examination, separation, and choice approached one by one, Lin Zhixia gradually understood that time backtracking was not a "cheating device", but a mirror that allowed her to see her true heart. When two people with "future memories" meet again in youth, they have to fight not only the misunderstandings of the past, but also the "separation" that is already destined in reality. In the end, Lin Zhixia no longer obsessed with "changing the ending", but learned to embrace the present with courage - it turns out that the best reunion is never to go back to the past, but to fall in love with you again in the present.
