Kim Hye In, a high school student from a modest background, becomes the key witness to a murder at a prestigious private school: Cheongdam International High Schoola den of ultra-privileged students. Transferred to this world of appearances and power, she is confronted with Baek Je Nathe school's most influential student, suspected of being involved in the crime.
But the story doesn't end there: a second murder the school, and this time the victim is a member of the Diamond 6the closed circle of the student elite. Hye In, nicknamed the "vengeful Cinderella", returns with a thirst for justice... or revenge. While the alliances cracksecrets accumulate and masks fall.
Season 2 focuses on two key characters: Kim Hye Innow a double star and the first student from a modest background to join the Diamond 6and Baek Je Nawho is going through a personal growth crisis in the midst of an increasingly unstable power struggle. New characters also upset the balance: Cha Jin Wook (Kim Min Kyu), a charismatic transfer student, and Lee Sa Rang (Won Kyu Bin), a hopeless romantic ready to do anything to protect Hye In.
