Transcript (en)

The boy comes to his teacher's house for tutoring, but he accidentally notices the dressing room door left open. When teacher Lisa starts the lesson, she's so moved by Jack's poetry that she even starts crying. Jack immediately goes over to comfort her, and in that moment he completely falls for her. They spend a perfect afternoon together, and after that they start riding bikes home from school together every day. Jack slowly forgets about his girlfriend Lucy. One day, while Lucy is waiting for Jack, she sees him with Lisa and immediately senses something is wrong, so she quickly hides The next day at school, she notices Lisa getting closer to Jack again After class, Lucy confronts Lisa directly and warns her not to ruin Jack's life, but Lisa tells her to stay out of it That night, Lucy and Jack get into a huge fight, and Lucy ends up leaving in tears The next day, Lucy warns Lisa again to stay away from Jack, but Lisa deliberately pushes her, causing Lucy to lose consciousness Meanwhile, Jack spends the whole night thinking and finally realizes Lucy truly loves him So he goes to Lisa to end things with her But Lisa hands him a cup of coffee, and after drinking it he starts feeling dizzy Lisa then pushes him straight into a pond, but the cold water snaps him back to reality and he manages to break free At that moment, Lisa finally reveals the truth. Jack's grandfather once abused her mother, which led to her mother dying full of hatred, and Lisa got close to Jack all along for revenge. But before she can finish him off, Jack grabs a piece of broken glass and manages to take her down.