Nate Foster is an FBI agent working to uncover terrorist plots. After some illegally imported caesium-137 is stolen, Nate is recruited by agent Angela Zamparo, who suspects the involvement of white supremacist groups. Through Zamparo’s connections, Foster is introduced to a small group led by Vince Sargent, a local leader who is familiar with their prime suspect, conservative talk radio host Dallas Wolf. Wolf, a figurehead in the movement for his incendiary rhetoric, assembles a gathering of the largest and most influential groups in the northeast. With Sargent’s introductions, Foster becomes ingratiated in the movement and meets Andrew Blackwell, the leader of a premier white supremacist militia, as well as gaining Wolf’s attention by convincing him he can fund an expansion of his radio show. Foster also becomes fast friends with Gerry Conway, a white collar engineer and family man.