Eighteen-year-old Su Nian is a first-year Chinese literature student who loves writing novels in a corner of the library. To escape readers pestering her for updates, she deliberately chooses the most remote old library on campus. But her “secret hideaway” is taken over by an unexpected visitor: Lu Yanzhou, the campus heartthrob rumored to be aloof and hard to approach, a second-year law student.
Two people with completely different personalities begin exchanging anonymous notes by chance, like pen pals. Su Nian has no idea that the gentle, insightful “L” writing to her is the icy senior who keeps running into her at the library and makes her heart race. Lu Yanzhou, meanwhile, doesn't know that the quirky “N” whose notes he reads is the junior who keeps blushing whenever he “scares” her.
As their online and real-life identities gradually converge, a sweet and innocent romance sparks between them.