Chu Xi is a top modern-day assassin, cold and ruthless. During a mission, she unexpectedly transmigrates to the Tianyuan Dynasty and becomes an unfavored concubine-born daughter of the Minister's household. She intends to keep a low profile, but in an accident, she saves Gu Yichen, the Prince of Jing'an, who is traveling incognito. Captivated by Chu Xi's unusual bearing and exceptional fighting skills, Gu Yichen launches an ardent pursuit. But as Chu Xi's identity gradually comes to light, court power struggles and conflicts in the martial world erupt one after another. Supporting each other through one crisis after another, the two compose a breathtaking tale of love amid turbulent times.
