South of Boston, the gang leader Frank Castroin his heyday dominates the party. Cleverly, he decided to train Colinwas only 14 years oldto pave the way for his future. At the same time, Billya teenager born in the neighborhood , hopes to get rid of poverty and crime through his own efforts.
Time flies, Colin and Billy both grew up, and both were admitted to the police academy and became police officers in the State Police Department. The shrewd, capable and ambitious Colin was quickly promoted to superintendent of the "special investigation team" after he was successful in annihilating the gangs. He had his own power in the police station, but he still obeyed Castro. And Billy, who grew up on the street and has a somewhat violent character, even though he wanted to be a good policeman, he was assigned the task of secretly infiltrating the gang organization and became Castro's capable man.
Castro’s criminal gang has grown stronger, and the police decided to start secretly preparing to eradicate them. The confrontation is getting more and more tense, and the failure of a series of cat and mouse operations has also made the police and the sensitive Costello aware of the spies appearing inside. The police and the gang's great washing operation is about to begin, and the two undercover undercovers who have suffered physically and mentally have also begun to embark on a road of uninterruptedness.
