After a week in isolation, with only Ryuk as his only companion, Light is ready to renounce ownership of his Notebook and forget everything about it. Freed from his past, Light is convinced of his innocence, but El is determined to keep him imprisoned for quite a long time, since the murders have stopped since Light was taken into custody. And then a new wave of murders shakes the country. Someone else has taken possession of a Death Notebook and is killing people not to do good to the world but to enrich himself... (From the release presentation)