Emmett's past threatens his new marriage. Kiesha wrestles with a decision that will affect the life of her unborn child. A run in with law enforcement leaves Kevin, Jake and Papa reeling. Douda tries to walk the line between gangster and mayor. Tiff and Dom go into business together. Marcus petitions to bring the Olympics to Chicago. Season premiere.

Tiff discovers a possible solution to her ongoing relationship woes with her new husband Emmett. Mayor Douda, Tracy and Trig decide it's time to take community protection into their own hands. Meanwhile, Kevin and Jemma hit a rough patch in their relationship.