Aaya González is a high school girl who was born and raised in a mafia family. Although her family environment is unique and dangerous, she has spent her days quietly and peacefully. Everything changes after learning that her grandfather has planned for her to marry the heir of another mafia family-Kazuki Rodríguez. A handsome and elite young man. But Aaya found that there's something off behind those cordial, polite and pleasant attitude of him. What could it be?