“This is just the beginning.” NBC has just released a new preview for the season six return of Chicago Fire.

The drama follows the personal lives and work lives of the Chicago paramedics and firefighters working on Engine 51, Truck 81, Ambulance, and Battalion 25. The cast includes Jesse Spencer, Taylor Kinney, Monica Raymund, Eamonn Walker, David Eigenberg, Joe Minoso, Yuri Sardarov, Christian Stolte, Kara Killmer, and Miranda Rae Mayo.

Season six of Chicago Fire returns to NBC on January 4th at 10 p.m. ET/PT.

Read more info and watch a preview below:

A Man’s Legacy”

MOLLY’S NORTH GETS READY TO OPEN ITS DOORS — Brett (Kara Killmer) attempts to make a lifesaving decision in the field to someone near and dear to the firehouse family. In an effort to impress Lily (guest star Ariane Rinehart), Otis (Yuri Sardarov) scrambles to get everything together for the grand opening of Molly’s North. Meanwhile, Boden (Eamonn Walker) becomes emotional following the rescue of a famous blues player from a burning apartment building and Dawson (Monica Raymund) struggles to come to terms with how she has been dealing with her father. Jesse Spencer, Taylor Kinney, David Eigenberg, Miranda Rae Mayo, Joe Minoso and Christian Stolte also star. Randy Flagler, Anthony Ferraris, Jon Seda, Colin Donnell and Marlyne Barrett guest star.