Ling Yuyan is a top killer. After being abandoned by the organization, she became a wanted criminal in the world. Even the home of her only friend Xue Jing was destroyed. With nowhere to go, she had to find a way not to be hunted. As a last resort, she used the space left by her mother to herself. Bracelet, she created a time-traveling watch. She originally wanted to time-travel to a few years ago, not to join the organization, and change the ending. However, due to an operation error, she and Xue Jing traveled to an imaginary dynasty, but the watch disappeared...