Forced to pass the Death Note to someone else after L's proteges try to expose Kira by tearing the taskforce apart from within, Light can only hope that the successor chosen will remain true to Kira's legacy.

Light Yagami is an ace student with great prospects--and he's bored out of his mind. But all that changes when he finds the Death Note, a notebook dropped by a rogue Shinigami death god. Any human whose name is written in the notebook dies, and now Light has vowed to use the power of the Death Note to rid the world of evil. Will Light's noble goal succeed, or will the Death Note turn him into the very thing he fights against?

Light plans to end his troubles with the FBI by killing off the agents working his case. However, one of the agents leaves behind a fiance who is also a former FBI agent. Before he died, her fiance gave her information that could lead the authorities straight to Light. To make matters worse, detective L has been assigned to work on the task force with Light's father.