Seventeen-year-old Light Yagami accidentally picks up a notebook called Death Note, an object that comes from the world of the gods of death. By writing the name of a person in this notebook, this person is killed after waiting 40 seconds. Light, who finds the world in which he lives corrupt, sees in it a unique opportunity to suppress evil beings. However, the Death Note was deliberately abandoned by Ryuk, a shinigami (god of death) who is bored. He appears to Light, explains some functions of the notebook and stays with him to see what he will do. Light decides to kill all the criminals in the world ...