Standing by her door He thumped the door. "Voight you in there" He shouted. No answer. "Right I'm done messing" Hank sighed before shoulder barging the door taking it off the hinges. "Chicago P.D" He shouted through the house. "Clear" Lindsay shouted. Walking into the living room with his gun raised he chocked back tears. The place was smashed, there was obvious a struggle. "Hold up guys I got blood" He shouted. Voight and Ruzek go way bank. A friendship that had formed in the kindergarten playground had stood the test of time so far. Through getting through police academy to the daily life in intelligence. Their friendship was fire. But since the day Heather Voight was kidnapped. Adam Ruzek started to question whether he should come clean about his feelings.

Unconnected victims of all ages and genders go missing around Chicago, Hank brings in the best of the best. The departments future rides on how this case is handled and the new member is not warmly welcomed except from one who takes a shine to her, like a duck to water. Jay is forced to navigate an ever growing love for a complicated girl with a sketchy background. Alongside trying to solve the hardest case of any of their careers.

Zoe Severide returns home from Hawaii after building her new life. Her original plan to rebuild her life in New York was turned upside down after she realized family meant too much deciding to up root and try a new life in Hawaii she managed to start successfully. Now she's been offered a position in the intelligence unit to work alongside best friend and previous partner from her Vice days. Suffering from emotional distress from a previous case that was the original reason she decided to leave her friends and family in Chicago she's back with her pride and joy.

To the outside world Adam Ruzek had it all, a promising career, a beautiful wife and a baby on the way. That's all about to change when one event changes everything, and Adam is left to pick up the shattered pieces of his life.