Assassin with Debt follows the life of a contracted assassin named Jayden MacWard who hailed from Ireland, who went to the States after the end of World War 1. MacWard was hired by his chosen boss to kill as many as possible without being caught by the police in the States, The State in question that he is to be assigned is Tennessee.

He thought he would be assigned to Kansas or Texas. But, People in Those States would tell him other-wise.