They were two girls who had known each other since high school, so close they were never apart. Song Chenghuan's mother left when she was eight, and she was raised alone by her father. Outgoing by nature, she was soft-hearted and kind inside. Shen Qingzhi was a girl with delicate looks and a shrewd mind. Their story slowly began to unfold after they met Gu Jiaming. Qingzhi fell in love with Jiaming at first sight, but was too shy to tell him. Chenghuan helped her by inviting Jiaming to dinner. But after a misunderstanding led to a fight between the girls, Chenghuan grew closer to Jiaming and gradually fell in love with him. Qingzhi's resentment grew day by day as Chenghuan drifted away. She felt Chenghuan was slipping beyond her control and could no longer help her get what she wanted. She tried to use their friendship to persuade Chenghuan to give him up. But Jiaming's love for Chenghuan left her hesitant and torn. In the end, Qingzhi did not get her wish.
Liang Wenze, the owner of the restaurant where Chenghuan worked, also loved her. He wanted her for himself, and gave Qingzhi the chance to plot ways to separate Jiaming and Chenghuan. After trying all sorts of methods, she finally succeeded. Jiaming returned to Shanghai, while Chenghuan stayed in the City of Glass. But by chance, Chenghuan uncovered a small part of the truth. She began working to expose the lie, then discovered that Jiaming was completely innocent. Heartbroken yet overjoyed, she found Jiaming and embraced him. But Qingzhi's destructive behavior did not stop. She kept Chenghuan in a state of fear and misery. In the end, Liang Wenze, who loved Chenghuan, helped her escape her predicament. But Qingzhi had become utterly mad and lost all reason. She even tried to run Chenghuan down with her car...