It's Katrina Harts first day at firehouse 51. Hart Grew up alongside a family of first responders and that's why she grew up to be a paramedic. Katrina is the new PIC ( Paramedic In Charge) after Gabby Dawson left, Katrina already knew Kelly Severide and Stella Kid. Kelly and Katrina went to academy with each other but little does he know his old crush is going to show up and work alongside him. Katrina and Stella met at the first responders gala. Katrina Hart is played by Gabrielle Moses I kept Erin Lindsay in it as I really love her

Elizabeth Cardiner was a shy, nerdy girl throughout high school and dated Kelly Severide for a short period time. They broke up due to Elizabeth heading off to join the army, much to her brother, Benedict's dismay. Benedict is very hardworking and has a job high up in the CFD. Now, 25 years old, and having returned to Chicago, Eliza has a job as PIC at Firehouse 51, courtesy of her brother. Little does she know that Kelly severide works there as the lieutenant. Kelly thinks of Elizabeth as the same girl he was with back in college, but she's not that girl anymore, will sparks be reignited between the two?

Addison was always a strong girl who didn't need a man, but when this particular guy came around, she couldn't help but fall in love. They had a fairytale love until that one day where everything fell apart.

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.

Samantha Voight, Sergeant Hank Voight's 25 year old daughter. Sam, much to her father's dismay, joined the FBI counter-terrorism force, and since she started, Voight and Sam haven't been as close as they used to be. When a case brings the counter-terrorism and intelligence together, things start to go south. What happens? Read... and find out! Please note that any media in the story doesn't belong to me, unless I say so. The chapter headers have been found using google images .