MONGSI

Isabella, an orphan, is adopted by a noble family, only to endure unjust violence from her new family every day. When she reaches her limit, she seizes an opportunity to escape the mansion. However, as she flees, she is harassed by vagrants and finds herself in mortal danger. Just as she instinctively braces for death, the witch's power within her awakens. Though she manages to escape the peril, she is caught in the act by her sister's fiancé, the Grand Duke Genos. Expecting to be taken back to the mansion, Isabella braces herself, but instead, Genos proposes a contract marriage, saying, "Lend me your witch's power, and in return, I'll help you with your revenge." A dramatic comeback from the brink! The cruel revenge of two people united for vengeance begins here...!

After enduring years of unjust abuse from her adoptive family, Isabella White finally manages to escape White Manor. In the midst of her peril, she unexpectedly discovers she is a witch. Her newfound powers are witnessed by her sister's fiancé, The Grand Duke Xenos. Instead of taking her back, he offers her a deal: her powers in return for revenge—through marriage. What will she uncover on her path to vengeance?