In their second collaboration, Tomas Milian stars as a biker named Rambo who avenges a friend's murder by orchestrating a war between rival crime families. Director Umberto Lenzi and screenwriter Vincenzo Mannino pack the running time with a barrage of beatings, shootings, kidnappings and chases that raised the bar for '70s EuroCrime and "put modern action flicks to shame" (DVD Drive-In).