Hu Xiaoyu (female) and Shi Zetian (male) both grew up in the small town of Shen'an. They both had wonderful childhoods. In an accident, Zetian, who met Xiao Yu for the first time, saved Xiao Yu's life out of his instinct to protect the weak, but he himself was killed in a car accident. Zetian's family moved to Deyang, the provincial capital, to avoid grief. Xiaoyu felt that Zetian's death was caused by his own mistakes, so he lived with guilt for seven years. Seven years later, Xiaoyu came to Deyang University, which she had always wanted to study. She met her roommate Zhu Xiaoxiao and became close friends. She also met senior Shi Haoyu, and later learned that Haoyu also grew up in the small town of Shen'an. But the amazing thing is that since Xiaoyu came to Deyang, he often met a young man named Shi Zetian in his dreams. Since he had the same name as the Zetian who saved him, Xiaoyu paid more attention to him. In addition, dreams were as real as reality, and Xiaoyu slowly fell in love with Zetian in his dreams. Since then, more and more coincidences have happened. Haoyu knows that Xiaoyu is the girl who was saved by his brother seven years ago. Xiaoyu also knows that Haoyu is Zetian's brother who died by mistake. But what happened to Zetian in the dream? What is the truth? The development of things is unexpected...