Liam infiltrates a white supremacist group which has begun a systematic petrol tanker bombing campaign. Garth is assigned to provide backup and support to Liam's family, but when a vengeful man - whose imprisonment Garth was responsible for - tracks him down, he finds instead that his presence is putting them in mortal danger.

Liam discovers that the leader of the white supremacist group is not who he seems. An unwelcome visitor from Garth's past mistakes Liam's family for Garth's - and sets out to exact his revenge on the man whose evidence put him in prison.