Woo Seulgi, a sharp-witted transfer student, has no interest in the power games at Chaehwa High-until she crosses paths with Yoo Jaeyi, the school's untouchable queen bee. Known for her ruthless intellect and cold demeanor, Jaeyi finds herself uncharacteristically fascinated by Seulgi's defiance. Their rivalry starts with competitive grades and cutting remarks but soon blurs into something more dangerous.

Yoo Jaeyi is untouchable-beautiful, intelligent, and the most powerful student at Chaehwa High. Everyone admires her, some fear her, but no one dares challenge her. That is, until Woo Seulgi arrives. Seulgi, coming from poverty, is instantly targeted by the privileged students. She endures their cruelty in silence, refusing to break. Intrigued by her defiance, Jaeyi offers protection, but Seulgi coldly rejects her. No one refuses Jaeyi. What begins as fascination twists into obsession. Jaeyi manipulates every aspect of Seulgi's life, forcing her into dependence. Seulgi, caught between resisting and succumbing, feels the walls closing in. As Jaeyi's possessiveness deepens, Seulgi must decide-fight for freedom or become hers completely.