Xia Chu is a high school sophomore when she meets Gu Chen, who has just graduated, while traveling. They fall in love at first sight. Treating life like a game, Xia Chu sleeps with Gu Chen, who falls deeply in love with this emotionally distant girl. Later, they both get into universities in the same city, growing to know and love each other and helping one another succeed. Gu Chen has dreamed of becoming an outstanding architectural designer since childhood. He began studying related books in high school and started a business while pursuing his master's degree. By then, Xia Chu has also embarked on a career as a comic artist. Just as both their careers are taking off, Gu Chen's childhood friend Su Jin suddenly appears. Scheming and manipulative, she interferes and drives a wedge between them. One misunderstanding after another brings Gu Chen and Xia Chu's relationship to an end. Before finishing her master's degree, Xia Chu drops out and hastily marries a former classmate from elementary school. By then, Gu Chen's company has gone bankrupt, and his parents have died in a car accident. Suffering from depression, Gu Chen goes to London alone. By chance, he learns the truth behind Xia Chu's breakup with him and her sudden marriage, and decides to return home to save her. He helps Xia Chu emerge from the darkness, and she helps him rediscover his dream. They save each other, and eventually marry, beginning a new life together.
