An Chenluo, the heroine who graduated from college, traveled to ancient times during the graduation party. When she woke up, she found herself living in the home of the hero Su Lingche, but she did not know Su Lingche at that time. But when the two met, they left an eternal promise. Gradually, Chen Luo fell in love with Lingche, but she will eventually return to modern times, so will he stay for Su Lingche, and where will he go?