This documentary investigates the shadowy world of what many consider to be the world's most dangerous gang - a super-violent criminal franchise dubbed by the FBI as the New Mafia. Known as MS-13 or Mara Salvatrucha, this street gang is a deadly international threat whose tentacles are spreading. It reportedly has up to 100,000 members in a range of locations from the back alleys of Los Angeles and American suburbs to the streets of El Salvador. Unprecedented access to current gang members plunges us into a lawless world, head-to-toe tattoos act as gang brands and the penchant for violence is notorious. Tapping into police surveillance and court testimony we'll deconstruct the gang's "corporate structure" and expose its innermost workings.