The mysterious jade pendant, the unexpected time travel, the fate of this strange body in my hands, who is the owner of this body? In this vast sea of people, thousands of miles away, she met a man of the same era as him. Is he her brother? The person who will protect her throughout her life? The lost prince and princess; the bloody royal battle... The flash of swords, the undercurrent, and the many hidden obstacles. Their fates are closely linked...