He was a very low level intelligence officer who had discovered some very unbelievable threats against the United States. So unbelievable that the hier up's in the Chain of Command not only scoffed at it but laughed him out of the room. He had to admit it was far fetched. But communication intercepts keep coming in with evidence to confirm his suspicions. And then incidents, sometimes dangerous incidents started happening to some of the people involved in the investigation. He couldn't tell if somebody was trying to scare them into keeping quiet or if they were only coincidental. He then discovered the threat was homegrown not international terrorists. And may even involve some hier ups in the government, the government he worked for, the government he was supposed to protect. With more evidence coming to light and the danger level rising, he had to uninvolve everybody else on the case for there safety. Now on his own he had to secretly keep up the investigation and also keep himself safe.