In a world where a mysterious notebook grants its possessor the power to kill anyone whose name is written in its pages, a brilliant and ambitious young man named Light Yagami discovers its existence. Driven by his unwavering belief in his own righteousness and desire to rid the world of criminals, Light embarks on a mission to become a god-like figure known as 'Kira,' bringing swift and brutal justice to those he deems deserving. As his actions draw the attention of both law enforcement and a enigmatic detective known as 'L,' Light finds himself in a deadly game of cat and mouse, where the line between justice and villainy becomes increasingly blurred.