Kira begins a world-wide massacre across the globe .
`` The series centers around Light 's subsequent attempts to use the Death Note to change the world into a utopian society without crime as a god-like vigilante named `` '' Kira '' '' and the subsequent efforts of an elite task-force of law enforcement officials , consisting of members of the Japanese police agency led by L , an enigmatic international detective , to apprehend him and end his reign of terror . ''