Yn's life took a dramatic turn when her mother married the influential chairman of Jeon Enterprises. Moving into the grand Jeon mansion, Yn was startled to meet Jung Woo, a charming young boy who seemed to be the family's heart. Her surprise deepened into fear when she realized that Jung Woo's father was Jungkook, the charismatic heartthrob of her college and the CEO of Jeon Enterprises-now her stepbrother. Jungkook, noticing Yn's curiosity about Jung Woo, issued a chilling ultimatum: remain silent about Jung Woo or face severe repercussions, including the potential loss of her crucial college project. As Yn settles into her new, high-stakes environment, she can't shake the feeling that the Jeon family's glittering facade hides dark, dangerous secrets.