City council member Price tells recently promoted fire chief Terry to stop goofing off with his crew and lead them, which proves a challenge.
A feud between the fire and police departments quickly spirals out of control, but Eddie and the team conceal the escalating conflict from Terry.
The firefighters struggle with their customary hazing of rookies when Chief Terry's daughter Lucy joins the department fresh out of the academy.
A school field trip gone awry lands the department in hot water. The only way out: recertification training with a longtime nemesis of Eddie and Terry.
A temporary transfer sends Andy to the B-shift where he finds a warm welcome, while the culinary skill of his replacement threatens Eddie's ego.
On the night of a rare super blue blood moon, the station receives bizarre calls for help from residents seemingly influenced by the lunar phenomenon.
Eddie rekindles his long-ago teen romance with a much older woman. Granny and Lucy both have crushes on a new dispatcher they've never actually met.
The crew plots to preserve a cherished tradition when city council member Price orders them to keep nudity out of their annual beefcake calendar.
Enjoying a streak of unbroken good luck, a cocky Eddie doesn't train for his upcoming boxing match against revenge-minded police captain Polonsky.
The squad fights a marijuana dispensary fire on the anniversary of Terry saving the life of Eddie — whose good fortune may have finally run out.
A crackdown by Terry forces the squad to try more clandestine means of indulging their love of gambling. But Lucy's overconfidence puts her in the red.
The squad reluctantly teams up with the police department to catch an arsonist who's targeting adult sex toy warehouses.
After discovering an anonymous blog full of dirty laundry about the fire department, Councilwoman Price tasks Terry with rooting out the writer.
Lucy's successful effort to add another female member to the squad prompts the guys to get in sync. Things heat up between Eddie and Councilwoman Price.
Terry and Eddie compete to impress the fire commissioner, who's also Eddie's dad. Andy abuses his power running the crew's role-playing game.
The squad tangles with the C-Team when they have to work together on public service announcements. Eddie and Andy prank Terry when he gets a new truck.
Eddie's knack for whistling lands him a coveted spot in Wolf Boykins' choir. Lucy seeks to make improvements to her uniform.
After Lucy gets hurt on a call, Eddie leads a counseling session to make sure everyone's in touch with their feelings. A secret changes Andy's life.
Ike faces a difficult choice when his brother makes a special request. The crew learns some surprising revelations from their DNA tests.
The crew members make their own special preparations for the Firefighter's Ball. Terry accidentally thwarts Eddie's professional goals.
The ball descends into chaos as Terry and Eddie get trapped in an elevator. Andy becomes hard to handle, and Lucy seeks some alone time with her date.
While investigating a possible fire in a house that's rumored to be haunted, the crew members come face-to-face with their deepest fears.
When holiday cards from his exes turn Eddie into a grinch as he works on year-end evaluations, the crew members do their best to lift his spirits.
When the team comes in contact with a monkey suspected of having the simian flu, they have to quarantine. Soon, isolation causes everybody to go ape.
Lucy prepares to become a full-fledged firefighter at the end of her probation but needs to get through a week of pranking from her colleagues first.
Terry has his wisdom teeth taken out on the day of the station's annual chili cook-off, which throws off his ability to judge the competition.
Mixed martial artist and part-time firefighter Stipe Miocic stops by the station. Terry, Vicky and Eddie recount very different versions of the past.
The team undergoes sexual bias training, and the instructor turns out to be Eddie's dream woman. Terry hires Andy to replace the carpet in his office.
After a navigation debacle during a rescue, the station gets a tech upgrade. The new AI system seems great at first, but soon tests the crew's nerves.
While Terry is on a mission to find a signature fragrance, the team goes against his rule of no birthday celebrations to pull off a secret bash for Andy.
Eddie serves as interim chief while Terry takes medical leave. After making several changes, he learns that the job is tougher than he anticipated.
Lucy goes on a date with a police officer who happens to be the son of Terry's nemesis. Granny has his hands full with a kid from a mentorship program.
All of Eddie's exes show up at the station after his divorce lawyer confesses to being a fraud. Granny, Ike and Andy fall for an exercise bike trainer.
During the department's annual charity pickleball tournament, the crew goes all out in their efforts to beat long-standing champions Eddie and Terry.
On Thanksgiving, Terry decides to spend the holiday with his team and the unpopular department mechanic shows up to fix a broken engine.
Major changes loom over the crew as Terry contemplates a lucrative offer and a shocking accident occurs at the fire station.
Sick of their lowly job at Pirate World, the crew can't wait to return to their station. But luring Eddie away from his cushy new gig won't be easy.
The chief reluctantly agrees to let Eddie choose a new probie, but he instantly regrets it when Eddie hires a candidate because of his ridiculous name.
As the city prepares to honor Eddie's grandfather, the crew opens a trunk found during the station rebuild and uncovers a potentially shameful secret.
With a storm on the way, competition heats up in Station 24 as the crew battles another shift to determine who's the most beloved by the chief.
With station photo day around the corner, the crew scrambles to look their best. And a decade-old wager with the chief could cost Eddie a pretty penny.
When Lucy dismisses all her Valentine's Day gifts, the chief worries that he's set a bad example. Eddie's dalliance with a dispatcher affects the crew.
Ike worries that a photo of the crew in the newspaper will attract the attention of a local crime boss. The chief and Eddie explore their musical roots.
Mickleberry must navigate the chief's annual pool party, where the beer is abundant, the rules are strict and the celebrated BBQ chicken is inedible.
At a firefighter's rowdy wake, Eddie explains his formula for the perfect toast to the chief, and Granny tries to collect a debt the deceased owes him.
Lucy and Granny reluctantly join a dating app for firefighters after learning Ike has invested heavily in it. Mickleberry attempts to prank the chief.
Eddie thinks he knows better than his crew, but when he's knocked unconscious in a fall, he sees what their lives would be like if he'd never been born.
The chief presides over a fake trial to discover who stole Lucy's expensive shampoo. But the proceedings will reveal an even more explosive case.
The chief invites the Tacoma PD to join forces with the station for a charity blood drive. But the crew goads their rivals into a not-so-friendly bet.