The series follows the employees of I.M.P. (Immediate Murder Professionals), an assassination company in Hell, on their many different jobs. The members of I.M.P. include Blitzo (the 'o' is silent), the boss of the venture, along with weapons specialist Moxxie, powerhouse Millie, and receptionist hellhound Loona. With the help of an ancient book obtained from a Goetial demon of Hell named Stolas, they manage to make getting their jobs done, and together they attempt to keep their business running.
