Adaline suddenly has her engagement broken off by the prince, who has fallen in love with the baroness. She is then murdered by someone and reborn as Cecilia, the daughter of the prince and princess! In order to take revenge on them, Cecilia is contractually betrothed to her brother-in-law from a previous life, who is called the "Ice Prince". The mystery-solving love romance between a cold, obsessive handsome man and a villainous daughter from a previous life is about to begin!