Imperium (2016)

Imperium follows Nate Foster, a young, idealistic FBI agent who is selected to go undercover to infiltrate an extremist white supremacist group. As Nate immerses himself in the dangerous world of domestic terrorism, he faces the challenge of maintaining his true identity while navigating the violent ideologies of the group. With the help of his seasoned partner and a network of informants, Nate must gather the evidence needed to bring down the organization and prevent a potential act of terror.