A Western vampire sneaks into the country to escape being hunted and unexpectedly falls for the cold-faced captain of a coastal defense unit. Their blissful newlywed life is cut short when someone tears his heart out with their bare hands. The bride he chose turns out to be a Chinese Black Impermanence.
During the hunt, the Black Impermanence Feng Chengying falls for him, but cannot defy her superiors' orders and enters a marriage of convenience with the Dragon Clan's Ao Yuan'an.
The vampire is forcibly marched aboard a ship for deportation. On deck, the defiant vampire and the dignified young master of the Dragon Clan cross paths, both ready to fight over the Black Impermanence, and old grievances flare anew.
As their memories are gradually unlocked, the tangled passions and grudges of the Republican era come to light. Feng Chengying, Cyrus, and Ao Yuan'an shared a love and hatred so unforgettable that it began back then.
As the three are swept up in memories of the past, one earth-shattering secret after another comes to light. Feng Chengying is no ordinary underworld officer. In ancient times, she was chosen to govern Heaven and Earth, but someone usurped her authority, stole her memories, and wiped out her clan.
A game of schemes spanning past and present lives. She swears furiously to reclaim her power.
As for the two men, one is a regret from a past life, and the other is the love of her present life. How will she choose?