The Vampire's Last Mission

If you are given a chance to know about a past you can't remember, won't you do anything to discover that forgotten past especially when you are constantly haunted by nightmares of the past you can't recall?
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Fierce? Check
Ruthless? Double check.
Heads roll wherever Ivy Yuan goes. Among her colleagues she is the most ruthless. Nobody dares to step on her toes and goes scot-free but what happens when this ruthless lady assumes the identity of a feisty, unintelligent and naive lady?
Inside a wealthy family such as the Mo Family would she be able to play the part of her this unintelligent lady well or will she blow her cover after her true self showcase.
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He is cold and even with his overwhelming magical powers he puts humanity first. He will go to any length to avenge the death of his father and the massacre of the family whom his family is it guardian. He won't hesitate to assume the identity of the blind son of the richest family in the City.
She is as hot as volcano while he is as warm and gentle as the early morning sun. Will two people with contrasting identity be able to let go of their hurts and embrace each other.