Filmed in Napier, New Zealand, Tom Gould documents the life of Martyka Brandt: a member of Mighty Mongrel Mob, the country's largest and most notorious gang. In a gang comprised predominantly of Maori and Pacific Islanders, Martyka was one of the few Pakeha (New Zealanders of European descent) members who joined the gang in the early 70s. From being admitted to a mental institution at the age of 14, escaping and living a life of Mongrelism, Martyka talks about turning his life around as he began to raise his own family, later becoming a solo father raising 10 children through welfare and foster care.