Yan Mo, a transfer student, arrives in City B for her senior year of high school. Her best friend tries to set her up with her cousin, Gu Xichen. After they get together, Gu Xichen never truly falls for Yan Mo, and they break up before long. Only after the breakup does he realize he likes her. In the end, Sister Jing helps bring them back together. Their happiness doesn't last. Gu Xichen starts flirting with his female best friend, cheating on Yan Mo, and Yan Mo makes the painful decision to break up with him. After the breakup, Yan Mo works hard at her studies and gradually develops a subtle connection with Jiang Han. Two weeks before Jiang Han leaves to study abroad, he confesses to Yan Mo, and she gets together with the cool, aloof, handsome top student. But on the day of their one-month anniversary, Jiang Han breaks up with Yan Mo. She can't accept it, but still manages to stop herself from contacting him again. During the rest of the semester, Yan Mo studies hard and gets into B University. At the university's overseas summer camp, she unexpectedly runs into Jiang Han during the Lantern Festival. They eventually get back together and begin a long-distance relationship across countries...
