As a couple weeks of his afterlife go by, Aaron Patterson―a 20 year-old ghost and his best friend, a guardian angel named Stephen have been living in the city of Limbo―an underworld-like city where the dead roam and await their final judgement. Though, with numerous complaints about the two coming from multiple sources, Aaron and Stephen are immediately brought to the Council of The Damned (the authority of Limbo) to be judged, only to have Grimm Mortem, the current grim reaper to come to their aid. After a miscalculation is fixed, the council come to confirm that Aaron has actually been chosen to be the next-in-line grim reaper, and is told to be taken nder the "wing" of Grimm. With no hesitation, the council of Limbo recruit both Aaron and Stephen to assist Grimm during his deadly job of bounty hunting demons which escape from the depths of Hell and wreck havoc among the mortals on Earth. Aaron's first mission being to hunt down a flying demon which has been haunting a neighborhood for centuries.
On a walk through the forest, Aaron comes across a group of Satan worshipping teenaged goths, who all identify themselves as "vampires". Seeing them as "no threat at all", Grim notifies Aaron to ignore the goths. Although, once countless civilians all over the town are found drained of their blood, the guys being to believe that the teenagers may have some involvement in these murderous mysteries.
Aaron is given a task by Grimm. He must destroy a curse on a strange VHS tape in order for it to harm no one. However, things get mixed up once Aaron accidentally sends the tape to the local Blockbuster. Now he must retrieve it, before the curse spreads.