Police detective Paolo Germi and the mysterious Marisa meet each other at a dance hall. Germi is unsuspecting of the secret Marisa is carrying with her: adverse conditions forced her into prostitution. As Germi finds the young girl brutally murdered, he decides to go after her killers. During his investigation, he enters a world of intrigue and obfuscation that leave an endless trail of blood.
A biker's brother is killed while investigating the kidnapping of a young boy, the byproduct of a war between two crime families. The biker vows to get revenge by finding the kidnapped boy and destroying the two families.
After his son is kidnapped, a millionaire industrialist seeks revenge, in spite of the potential danger that his rash actions will bring about for his child and another kidnapped boy, the son of a poor mechanic.
