The protagonist Duo Siyan accidentally traveled to a foreign time and space that did not exist due to a word from her boss. The country was called Star Kingdom. She remembered what happened before and after one night, and she fell in love with the emperor Nangong Yuhao in this country. The love story of the two encountered many obstacles. Nangong Yuhao almost lost Duo Siyan because the emperor did not let her go. After various things, the two finally changed from being ignorant and became an enviable couple. In the end, the two made a vow to each other and left.