When a dangerous electrical surge sparks a devasting fire at Eve's apartment complex, Station 42 races to save trapped residents, and they begin to question what is straining Edgewater's aging power grid.

When escaped convicts trigger a dangerous manhunt, Bode and the Station 42 crew join forces with Sheriff Mickey Fox and her deputies to protect their loved ones and the community caught in the crossfire. 

As a mounting controversy puts Station 42 under scrutiny, Bode and the volunteer firefighters face a challenging test that leads them to an unexpected rescue.

As financial pressures continue to mount at Station 42, Bode fights to prove that Edgewater's new volunteer firefighting program can make a difference, and recording artist INK performs at Smokey's Bar.

When a fast-moving wildfire threatens Edgewater, Station 42 and Three Rock battle increasingly dangerous conditions in an effort to contain the blaze. Meanwhile, as Bode works to connect with a newcomer carrying a complicated past, Sharon helps uncover a critical lead in an active investigation, setting the stage for unexpected consequences both on and off the fire line.

As Edgewater celebrates its annual Founders' Day festival, a catastrophic sinkhole opens beneath Main Street, trapping residents underground and forcing Station 42 into a high-stakes rescue. Meanwhile, a mysterious former firefighter arrives in Edgewater.