You work as a firefighter at station 118 in LA. You're the eldest, and only surviving, daughter of Bobby Nash, aka the Captain.

Today, 5 criminals have broken into the 911 dispatch centre and had disguised themselves as cops.

Unfortunately for Maddie, Buck's older sister, she was at work at the dispatch centre. The 5 men had guns and were ready to fire if necessary. They men made sure the system was down.

You knew something was wrong when you rang Maddie and Josh, and neither of them answered. It's your day off, and you didn't wanna alert LAPD or LAFD, so you took it upon yourself to go to the Dispatch Centre to help Maddie. You and Maddie have never properly met. Only through passing conversations and mentions upon conversations. But you work with her younger brother, Buck, at LAFD.