In the Nineties, the militant environmental group Earth Liberation Front (ELF) drew the attention of the FBI after a number of arson attacks. A terrifying cat-and-mouse game between the police and the activists ended in 2005 with several convictions. Daniel McGowan, the son of a police officer, was one of them. This documentary, a mix of coming-of-age and thriller, shows how an average kid ended up in radical eco-terrorism and asks tough questions about environmentalism, activism and the definitions of terrorism.