Three years ago, a poisoning murder took place in a luxury apartment. Hwayoung, who lost her mother in the incident, begins saving up a large sum of money to find the killer. Tempted by the promise of quick money, she gets involved in a “phishing” scam, but soon realizes she herself has become the target of human trafficking... Just as she struggles desperately to escape the crisis: “If you’re going to run away… take me with you.” Her “Smile Bear,” filled with memories of her mother, suddenly appears, holding a blood-dripping hand axe.