Here we meet the three major players of the series: Lt. Mike Torrello, head of Chicago's Major Crime Unit(MCU); Ray Luca, a young hood about to make his mark on the underworld; and David Abrams, an idealistic public defender trying to bury his Mob-connected roots. As the story unfolds Torrello is working with to bring down members of Chicago's underworld while Luca is taken under the wing of Manny Weisbord; one of Chicago's most powerful crime figures. As events proceed Torrello and Luca each become aware of the other's existence. Torello realizes that there is a new player that he must bring down.

Here we meet the three major players of the series: Lt. Mike Torrello, head of Chicago's Major Crime Unit(MCU); Ray Luca, a young hood about to make his mark on the underworld; and David Abrams, an idealistic public defender trying to bury his Mob-connected roots. As the story unfolds Torrello is working with Abrams to bring down members of Chicago's underworld while Luca is taken under the wing of Manny Weisbord; one of Chicago's most powerful crime figures. As events proceed Torrello and Luca each become aware of the other's existence. Torello realizes that there is a new player that he must bring down.

With Torello's MCU hunting a psychopath, Luca plots jewel heists and the takeover of a sports-gambling operation.

Torello gains a major advantage when one of Luca's burglars is connected to a robbery-homicide of a coin collector's wife. Torello finds out Julie is pregnant.

Mobsters support Luca's nationwide gambling scheme. A publicity-seeking sheriff hampers Torello's arrest of one of Luca's men.

A book intercepted by Torello jeopardizes Luca's nationwide gambling operation. The Torellos meet with tragedy.

Attorney Abrams falls for a reporter helping him defend a tenant accused of assaulting a slum landlord.

Conflict ruins the Torello's weekend trip. Luca situates in Las Vegas. Bigots target Abrams's relationship with Susan.

Torello confronts his new friend, now laundering money for the Mob. Federal investigators indict Luca and Bartoli.

Devastated by Kehoe's death, Torello stonewalls Breitel's federal investigation. Abrams joins the MCU on the street.