Christian (Chris) Wolff, a genius mathematician which is known by the alias "The Accountant", works as an auditor for powerful criminal enterprises. However, after the pursuit by Financial Crimes Enforcement Network in Treasury Department he decides to change his work profile and starts an audit in a common law-abiding company. Soon, one of employees discovers a lack of several million dollars in company's reports. Christian intends to investigate that case and find the lost money. Nevertheless, he doesn't suspect his Actions will lead to mysterious serial murders and he will be in a mortal hazard himself. Can he finish the investigation and survive?