Explination:
bassicly the amv is a flashback in color
in the beginning it sounds gloomy and dark as L thinks of his childhood.
then it goes to L and light being friends the sequence changes to show a lesser friend ship between the two. Light/Raito's memories go into play as he remembers how he got to that place. then it goes to them competing against eachother wondering "is he L" and "is he kira". the song reaches its climax and so does the amv. as the symphony plays dramaticly L and watari start to die.* i cried making this part* as L remembers his child hood he is suprised to see Light-kuns face and he slowly decends to his everlasting sleep as the music decends as well. the scene changes to L's last message who is being read by light/ Raito. he delets it. *i put this little part to show hes a jerk*
also im sorry about the subtitles and that they arent in english i couldnt find the raws