Conspiracy, mystery, and romance all take place in a wealthy family.

One day, Kei, who had inherited a huge amount of money from her deceased tycoon father, receives a letter stating that her fiance is the devil. The sender of the letter is a mysterious woman dressed in a white gown. The woman had escaped from a psychiatric hospital, and for some odd reason, had the same exact face as Kei. Kei is soon pulled into a labyrinth of mysteries: Can she trust her fiance? And why does the woman in white have the same face as her? Is the mystery woman a savior…or the devil?

The drama is a mystery romance based on The Woman in White, a 19th century best-seller by Wilkie Collins.