Park Arang, a senior at Heukrim High, endures relentless bullying from a gang of delinquents—framed for stealing exams, threatened with illicit videos, subjected to violent humiliation... After endless torment, she finally jumps from the school rooftop. But in her final moments, a sinister pentagram scar on her arm suddenly glows, fusing a demon into her soul. At 3:33 PM, she returns—reborn in her bloodstained uniform...
