Yu Yan, who lived on the blue planet, and Bai Xing were a loving same-sex couple. One day, the two of them were traveling by car. While they were talking, they were accidentally hit and killed by a large truck. When they woke up, one became the noble prince Yu Yan, and the other became the son of a general. The two were inspecting the disaster. The two original owners were assassinated and had been killed. What kind of amazing adventure will the two people who have traveled through time have? Let's start this legendary adventure