When Maizi Maizi, a girl from the south, first came to Beijing with her parents, she was ridiculed by Lin Yu, a boy born and raised in Beijing, and ended up not knowing each other until they started fighting. As they grew up, the feeling of meeting each other gradually changed from a friendship of buddies to a faint love. However, before everything started, Lin Yu left without saying goodbye and went to the United States.
A returnee from overseas inherited his father's business and took over his father's business after graduating from college. Xu Tao, a famous low-key diamond king, met Mai Zi during an interview. From the initial mutual dislike to the gradual attraction, he eventually became Maizi's boyfriend.
However, just when the relationship between the two was getting stronger, Lin Yu, a childhood sweetheart who had lost contact for many years, suddenly returned to Beijing.
One is a new love, and the other is an old love that she can't let go of. Where will she go...