Ghosts want to be reincarnated, but in order to do so, they'll have to rebel against Hell's rules...
Upsetting the balance of Yin and Yang, ghosts begin to band together and form groups, in an attempt to return to the realm of the living.
The leaders of Hell must find these ghosts and return them to the realm they belong to, but there's a problem...
There aren't enough people for the job! So now, who will take on the role of catching these increasingly powerful and intelligent ghosts?!