Taking a bullet aimed at her friend cost Zel Stanton her life. She wasn't supposed to die, and so Death gave Zel a choice; she could carry on as a Lost Soul, only able to watch over, or haunt the living, communicate with other ghosts, or to become a Grim Reaper, who ferries the souls of the dead to either Heaven or Hell. The Grim Reaper's Organization is headed by the First Reaper, also known as Death.