A riveting police drama about the men and women of the Chicago Police Department's District 21 who put it all on the line to serve and protect their community. District 21 is made up of two distinctly different groups: the uniformed cops who patrol the beat and go head-to-head with the city's street crimes and the Intelligence Unit that combats the city's major offenses - organized crime, drug trafficking, high profile murders and beyond.

This powerful, hard-edged crime drama explores the dark side of the American immigrant experience and dares to ask, "How far would you go to survive?" Lana’s only chance to escape the war-torn Balkans is her long-lost brother, Darko, a street-smart gangster with enemies intent on revenge. Isolated at first by her inability to speak English, Lana desperately hopes that she and her brother can achieve the American dream that she can only glimpse. But her illusions are shattered as she is forced to survive by any means possible on the mean streets of Chicago. As she gets pulled deeper and deeper into her brother’s criminal world while a steely determination grows in her heart, Lana must risk her own life to overcome Darko and his pursuers if she hopes to finally realize her dream.

Wayne Dobie is a shy cop whose low-key demeanor has earned him the affectionate nickname "Mad Dog." After Mad Dog saves the life of Frank Milo, a crime boss and aspiring stand-up comedian, he's offered the company of an attractive young waitress named Glory for a week. At first both are uneasy about the arrangement, but they eventually fall in love. However, the situation becomes complicated when Milo demands Glory back.

Experienced Green Beret sergeant Johnny Gallagher is escorting a prisoner, Airborne Ranger Thomas Boyette, back to the US, but Boyette escapes and Gallagher must risk life and limb to catch him.