Amid the chaos of war, Ling Xiao, who has lost his memory, meets Mo Yu, a refugee fleeing for her life. Following the instructions of a mysterious old man, the two set out together to find the people their hearts yearn for. As time passes, they fall in love, but who would have thought his heart belonged to someone else? A tangled past, intricate schemes, friends who understand one another, and lovers who stand by each other, only for them to end up paving the way for someone else. Who will claim the crown of the king?
