About the title
On their way to the hospital, two girls accidentally discover a mass grave of soldiers executed by drug cartel gunmen. The gangsters try to kidnap the witnesses before they can tell the police what they saw, but special forces captain Guerrero intervenes and fights off the attackers. Upon learning this, the cartel leader orders his men to eliminate the officer and his squad. Soon Guerrero and his unit are ambushed and forced into battle against a superior enemy force.