She finds a hidden phone—Chan-kyu’s phone. As she plays the last video recording, the screen shows her brother looking into the camera, terrified. A figure approaches from behind. The video cuts to black. We hear a crack, a thud, and then the sound of footsteps walking away.
Chan-mi discovers her brother’s phone — the screen is cracked, and the last search is “How to die without pain.” Suspicious, she digs deeper and finds a chat message: “If you don’t want this to be known, come to the rooftop. Don’t tell Chan-mi.” Chan-mi transfers to Yongtan High School under a false identity to investigate. revenge of others 1. bolum
: At the hospital, Soo-heon is diagnosed with a brain tumor, adding a layer of desperation to his actions as he seeks to earn money and find purpose in his remaining time. Story Beats of the First Episode She finds a hidden phone—Chan-kyu’s phone
: A struggling student at Yongtan High who becomes a central figure in Chan-mi's journey. He witnessed Won-seok's death and acts as a "hero" who takes violent revenge on school bullies on behalf of victims. The video cuts to black
The premiere episode establishes the dual narrative of revenge and justice. It introduces , a high school competitive shooter, and Ji Soo-heon , a delinquent student with a hidden past.