Light Yagami is an ordinary university student. One day, he receives a "Death Note," which changes his life. The Death Note awakens his warped sense of justice and genius. He becomes the murderer Kira and punishes criminals. L is a well-known private detective. L appears before Light Yagami. L defines Kira as evil and decides to catch him. Then N, who has a beautiful appearance but a dangerous presence, appears.