Urashima Eiji appears as an ordinary university student, but he hides a dark secret: he is the son of a notorious serial killer. As his father's heinous crimes continue, Eiji grapples with memory blackouts, fearing he may share his father's sinister inclinations. When a murder mirrors his father's style, Eiji joins forces with the victim's friend, Nami, to uncover the truth and prevent another tragedy, driven by a haunting question: Is he becoming his father's successor?