In Death Note Relight 2: L's Successors, two successors of the renowned detective L take on the mission to defeat the elusive mass murderer known as Kira. Using the supernatural notebook known as the Death Note, which has the power to kill anyone whose name is written in it, they engage in a cat-and-mouse game with Kira, risking their lives to protect the innocent and bring justice to the world. With twists, psychological battles, and high stakes, this thrilling anime movie explores the limits of morality and the nature of justice.

When a high school student discovers a supernatural notebook, he gains the power to kill anyone by writing their name in it. As he begins to use the notebook to bring justice to the world, a detective known as L starts to investigate the mysterious killings.