Misa gives Light her DN, and the first thing Light does is write down his father's name - to the shock of Misa. Light has his father hand over the DN to him before dying of a heart attack. He says sacrifices needs to be made if a new world is to be born.

Light's father returns on cue and carries the briefcase containing the DN. Light says how sorry he is and that he has always respected his dad, but says what he did is necessary for the world. Light's father remained silent, and opens the briefcase - to show there's nothing inside.

The rest of the investigative team appears and has Light at gunpoint while Misa is handcuffed. Light is baffled, only to be confronted by none other than......L, who is STILL well and alive.

After the first day when Misa has recovered her DN, L confirms the deaths of the criminals and has locked down Misa as his prime suspect. He secretly has Misa's DN exchanged for a fake one. L has the real DN with him.

How can he still be alive? There's a rule in the DN that says once a person's cause of death is written, it cannot be changed. So L decides to put his own life on the line and wrote his own name down (though the audience still could not see his real name), where he will "die peacefully 23 days from now". As he has already written his own death, what Rem wrote on her DN would not be applicable on L, and thus L is guaranteed to live for another 20 days. Though L is saddened that he could not protect Watari.

He convinces Light's dad to take part in this set-up, Light's dad was shocked at L's determination to go so far, and in the end agreed. Light's dad is saddened to see his son fall to such depths, and he has no choice but to have him arrested. Light tries to write some names on the DN paper inside his hidden watch compartment (I'd like to get my hands on such a watch), but is shot by Matsuda the marksman.

As a last resort, he urges Ryuk to kill everyone in return for showing Ryuk even more interesting stuff, but Ryuk isn't buying that, and writes Light's name down. Light writhes in pain as he dies in the arms of his father, who came rushing to him, while Misa was devastated, falling on the ground sobbing.

L says he would burn the remaining DN, much to the disappointment of Ryuk, who then goes home.

20 days later:

Interpol says they did not believe anything about the DN, and has decided that this matter has come to a close and they will leave it as that.

L sits alone in the HQ eating candy, Light's dad comes in and commends L for his sacrifice. He then salutes L and leaves. L then "dies peacefully", at his side is a photo of the late Watari.

One year later:

Yagami's mom and sister Sayu both lament at the death of Light one year ago. As it's snowing outside, Sayu, carrying an umbrella, goes to the station to pick her dad up. She says it's been a year since Kira "disappeared", and that the world has gone back to the way it's been. But she's not disappointed, as she believed that it was Kira that killed her brother, and that his death was not in vain as he had managed to bring Kira down before dying. Light's dad hopes that she would never know the truth.

The final scene shows Misa, who lost all her memories concerning the DN and thus could not be prosecuted, mourning for Light's death a year ago. She senses that she's missing something important, but could not remember what it was. The camera then pans outside the window on Tokyo Tower, where Ryuk is seen flying towards the audience, laughing away.