Setting • Takes place at Cheongdam International High School, a private elite school for the wealthy. • A murder takes place at the beginning — Baek Je-na’s best friend, Lee So-mang, dies mysteriously. Main Characters • Kim Hye-in – A poor student who becomes the only witness to the murder and gets a scholarship to the school. • Baek Je-na – The queen bee of the school, rich, feared, and manipulative. • Seo Do-eon – A popular boy and Je-na's friend, kind to Hye-in. • Lee So-mang – The murdered girl; her death drives the mystery. • Yoo Seo-joo – A mysterious girl who seems innocent but has secrets. Key Plot Points & Twists • Hye-in is blackmailed into transferring to the school to keep quiet about the murder she witnessed. • At school, Hye-in is bullied by Je-na and others for being poor, but she slowly gains attention for being brave and standing up for herself. • Lee So-mang's death is revealed to be a murder, not a suicide — Hye-in is the only person who knows it was Je-na's birthday the night So-mang died. • Je-na acts suspicious, but clues start pointing toward Yoo Seo-joo, who was So-mang’s secret best friend. • It’s revealed that So-mang and Seo-joo were in a secret relationship, and So-mang was planning to expose corruption at the school. • Do-eon and Hye-in grow closer, making Je-na jealous and more aggressive. • Shocking Twist: Yoo Seo-joo was the one who killed So-mang out of jealousy and fear of being exposed — not Je-na. • Another Twist: Je-na knew Seo-joo did it but was covering it up to protect her family's reputation, showing she's not just a cold villain. • Ending Twist: Hye-in leaks the truth anonymously, causing Seo-joo to be arrested, and Je-na's reputation is ruined, but Hye-in also gets expelled for her role in hiding evidence.
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• Takes place at Cheongdam International High School, a private elite school for the wealthy.
• A murder takes place at the beginning — Baek Je-na’s best friend, Lee So-mang, dies mysteriously.
Main Characters
• Kim Hye-in – A poor student who becomes the only witness to the murder and gets a scholarship to the school.
• Baek Je-na – The queen bee of the school, rich, feared, and manipulative.
• Seo Do-eon – A popular boy and Je-na's friend, kind to Hye-in.
• Lee So-mang – The murdered girl; her death drives the mystery.
• Yoo Seo-joo – A mysterious girl who seems innocent but has secrets.
Key Plot Points & Twists
• Hye-in is blackmailed into transferring to the school to keep quiet about the murder she witnessed.
• At school, Hye-in is bullied by Je-na and others for being poor, but she slowly gains attention for being brave and standing up for herself.
• Lee So-mang's death is revealed to be a murder, not a suicide — Hye-in is the only person who knows it was Je-na's birthday the night So-mang died.
• Je-na acts suspicious, but clues start pointing toward Yoo Seo-joo, who was So-mang’s secret best friend.
• It’s revealed that So-mang and Seo-joo were in a secret relationship, and So-mang was planning to expose corruption at the school.
• Do-eon and Hye-in grow closer, making Je-na jealous and more aggressive.
• Shocking Twist: Yoo Seo-joo was the one who killed So-mang out of jealousy and fear of being exposed — not Je-na.
• Another Twist: Je-na knew Seo-joo did it but was covering it up to protect her family's reputation, showing she's not just a cold villain.
• Ending Twist: Hye-in leaks the truth anonymously, causing Seo-joo to be arrested, and Je-na's reputation is ruined, but Hye-in also gets expelled for her role in hiding evidence.
Season 1 episode recaps
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