In her previous life, she was a top killer on the line between life and death, and a mysterious doctor who brought people back to life. Once she traveled through time, she became Yazhi, the abandoned daughter of an aristocratic family. The silver needle in the left hand cures terminal illness, and the bloody blade in the right hand breaks the conspiracy. When her dusty life experience was revealed, she emerged step by step in the whirlpool of intrigues, but she ran into those unfathomable eyes - "Since you have broken into this king's world, don't even think about escaping."