The coolest woman alive is interested on a psychology-obsessed woman. Chaeyoung basically owns the campus. Rich, cool, kind, talented and smart. But she's got one minus point. She's not interested in boys. She doesn't hate them but she doesn't like them either. She's known for turning them all down. Publicly or privately. Myoui Mina. A woman who thinks logically. She doesn't believe in coincidences. She supports argument with research. According to her, every human behavior can be explained by science. By psychology. They met. They argue. They hate. They reconciled. They fell. Are their crossed-roads purely incidental? Fate? Or Science?