Amaya Cresswell, a renowned toxicologist from the 22nd century, traveled back in time thousands of years ago and took over the body of a weak concubine's daughter. She found herself struggling against her cruel stepmother and sister who tried to torment her constantly. Using her poisoning skills, Amaya managed to escape their cruelty. Amaya then decided to participate in the concubine selection competition to marry Crown Prince Gideon Lockwood. This move was motivated by her desire to save herself from certain death at the hands of her relatives.