Zhang Xiao (Liu Shishi) is obsessed with costume TV dramas all day long, and a sudden car accident makes her meet Yin Zheng (played by Wu Qilong), the stepson of Kang Zhentian (played by Liu Songren), the president of Zhentian Group, who looks very much like the "Fourth Master" in the play. In order to stay with the "Fourth Master" in her dreams, she applied for a graphic designer to work under Zhentian. At this time, a mysterious woman Lan Lan (played by Liu Shishi) also appeared next to Yin Zheng, who looked exactly like Zhang Xiao. Lan Lan and Yin Zheng got closer and closer, which made Zhang Xiao suffer. Unexpectedly, an accident happened at this time, Zhang Xiao lost her memory, and became a stranger to Yin Zheng. Zhang Xiao, who lost her memory, was no longer bound by the knot in her heart, and devoted herself to work. At this time, Kang Sihan (played by Sun Yizhou) from the rival company quietly broke into Zhang Xiao's life. Just when Zhang Xiao was beginning to fall in love with Kang, Kang's girlfriend Meng Xinyi (played by Ye Qing) came back from abroad. She discovered her boyfriend's betrayal and died in an accident. This hurt Kang Sihan and Zhang Xiao's conscience and they vowed never to see each other again. At this time, Yin Zheng appeared by Zhang Xiao's side in time and helped her through her most depressed time. Zhang Xiao, who accidentally recovered her memory, realized that Yin Zheng was the man in her dream...