Write anybody's name on the death god notebook known as "DEATH NOTE" and they will die. Join Light, who finds a Death Note, and L, a world-renowned detective who is shrouded in mystery, as they use their brilliant minds to engage in a cat-and-mouse game.
Light Yagami obtains a "Death Note." He writes the name of an acquaintance, and the acquaintance dies. Later, in order to protect his father who is also a detective, Light, out of a sense of justice, kills criminals one after another by using the Death Note.
Light believes that there is another Kira because the FBI agent who was after Light died without Light's intervention. Meanwhile, Light suspects that L has planted a surveillance camera in Light's room.
Misa is detained on suspicion of being the second Kira, and she, unable to bear the interrogation by L, asks Rem to kill her. Meanwhile, Rem orders Light to save Misa, and Light visits L to clear his suspicions.