Su Wanwan, a modern artifact conservator, unexpectedly transmigrates into the body of a famous, frail noblewoman in the capital. Seeking a quiet life, she takes the initiative and marries Xiao Yan, the aloof Prince of Zhenbei, who is rumored to bring death to his wives. After the wedding, all she wants is to shut herself away to restore artifacts and enjoy good food. Little does she know that the man beside her is actually a living King of Hell who commands the realm's secret guards. On the night her secret identity is revealed, he gazes at the priceless national treasures she has restored, pins her against an antique display shelf, and says in a husky voice, “My lady, what other surprises do you have that your husband doesn't know about?”