A vengeful father escapes from hell and chases after the men who killed his daughter and kidnapped his granddaughter.
 
The FUN FACT is more interesting than the movie.  Nuff said.
 
FUN FACT:  The coin the Accountant uses throughout the movie is an Obolos, from ancient Greece. In those days, Obolos were placed in a dead man's hand (or two over his mouth so the first time he opens his mouth the payment falls out into Charons hand) by mourners as payment to Charon the Ferryman, who was in charge of crossing souls over river Styx into Hades, the Greek version of Hell. This would support the Accountant's role as a retriever of lost souls.