9-1-1

The 118 races to save the lives of workers trapped in a factory fire; Maddie reveals a painful family secret that causes Buck to confront his childhood and answer why he is the daredevil he is today.

The 118 has a day from hell with a never-ending series of bizarre emergency calls; a man tapes himself to a freeway billboard; a restaurant manager destroys his own business; Eddie feels a spark with Christopher's former teacher.

The 118 are called to the tarmac when a flight attendant reaches her limit with her flight's passengers; Eddie worries Christopher will not accept him dating; Buck reconnects with an old flame.

A man gets pinned under a Humvee; a garage band rocks out too hard; Michael notices strange behavior at a nearby apartment; Hen's mother unexpectedly arrives and announces she is moving to Los Angeles.

Following the devastating fire at the Nash home, Bobby's fate remains uncertain; Athena embarks on a mission to uncover the truth; Hen and Karin engage in a heated custody battle; Christopher grapples with forgiving Eddie.

The 118 and Tommy are presented with the Medal of Valor for their work on the cruise ship rescue; Hen and Karen encounter an unforeseen hurdle in their foster care journey; Eddie's emotional affair develops further.

A trailer with millions of bees crashes on the streets of Los Angeles, unleashing a swarm.

When a toddler falls down a pipe and becomes trapped, the 118 must rely on more than their skills to rescue him; old wounds are opened when members of the 118 race to the aid of a man dealing with a divorce.

Athena's only chance of surviving and saving everyone on the flight is to attempt to land the plane before it crashes and call on the 118 for help.

Maddie and Athena investigate a case surrounding an abducted mother and child; Hen and Karen learn more about Mara's family history; Eddie grapples with unresolved feelings for someone from his past.

When Athena is assigned a rookie to mentor, she begins to question her own abilities.

The 118 is once again working on the spookiest night of the year and missing out on all the tricks and treats; Buck's Halloween decorations become a little scarier than he had hoped.

When it finally looks like Hen and Karen may get their foster license back, they are hit with another obstacle; the 118 races to the aid of a cheerleader involved in an infield collision.

After a victim of the apartment fire that changed Bobby's life resurfaces, he searches to make amends; driven by his need to right past wrongs, Bobby delves deep into memories of his childhood, unearthing moments from his fractured past.

After years of anticipation, Maddie and Chimney's long-awaited wedding day arrives; when the groom mysteriously vanishes, the 118 races against time to ensure he doesn't miss the most crucial day of his life.

Athena is tasked with safely delivering a prisoner to testify on a high-profile case; a light plane is hit by a swarm of bees and careens into a passenger plane.

The 118 responds to a fire at a local animal shelter and races to evacuate all the animals; Maddie takes a 9-1-1 call that sets her on a quest for answers.

Following Maddie's mysterious 911 call, Chimney returns home to find his daughter alone and Maddie nowhere to be found.

Things get messy for the 118 following a massive pipe explosion; Athena investigates the brutal beating of a man found behind a grocery store.

Bobby and the 118 race to save lives after an explosion rocks the hospital where Dr. David Hale is performing surgery; Michael makes a life-changing decision.

Following an earthquake, the 118 races to the scene of several unusual fires and must figure out their cause before anyone else is hurt.

A man claims he was carjacked, shot and buried alive; a homeowner thinks her roommate is a ghost; Hen receives a visit from the past; Athena and family are concerned that Harry is still haunted by visions of Jeffrey.

Athena and Buck are in a race against time to rescue the rest of the 118 following the fire in the biolab.

An abandoned oil well erupts and causes a massive sinkhole in downtown LA; Athena investigates a 30-year-old cold case involving a casino robbery; Buck fears his relationship with Taylor might be ending.

The 118, still reeling from their recent loss, is dispatched to a mass casualty event after a high-rise apartment building collapses; Athena and Chimney have to work together to save a familiar face.

The 118 is called to a research lab that has been set on fire and becomes a biohazard.

Following the tragic events at the lab, the 118 must come together to lay their fallen hero to rest; despite her own grief, Athena re-investigates the death of a child to help a grieving mother.

Chimney is determined to find a missing Maddie amongst the chaos of St. Patrick's Day.

The members of the 118 race into action when a woman falls over her balcony; Athena investigates when a bike rider is impaled on a stop sign; Eddie begins his therapy for his PTSD and survivor's guilt; Maddie fears the worst when Jee-Yun falls ill.

Athena investigates a robbery at a gas station; Bobby and the 126 race to rescue a novice diver who panics while in a shark cage; Eddie reaches his breaking point; Maddie shares some news with Buck, who realizes he has to come clean with Taylor.

Athena, Bobby and the 118 must rescue a family whose pick-up truck has been rigged with a pipe bomb that will detonate if the vehicle slows down and goes under 55 mph; Eddie has a rough transition into his new job; Buck makes a relationship decision.

The members of the 118 are called to a series of emergencies around Christmas Eve; Eddie struggles with an emotional Christopher.

The 118 race to the rescue when a structure collapses at a convention; Athena's father suffers a stroke; Hen stretches herself too thin with test prep and her new responsibilities at the 118; Maddie tries to help new recruit get his bearings.

A social media influencer has an accident in a sauna; an emergency at a reality show wedding; a tragedy when a mother and her daughter go hiking; Maddie worries she has missed too many firsts with Jee-Yun.

After a mysterious death, Hen and Chimney put their lives in danger when they suspect that someone is playing God to make themselves look like a hero; Eddie visits Texas, where he attempts to reconcile with his father.

When a blimp suffers mechanical failure and its engine catches fire, Athena and the 118 must rescue victims both inside and outside a packed sports stadium; Bobby and Athena drop off May on her first day of college and discuss honeymoon plans.

The 118 races to the rescue when the call center goes up in flames; Bobby risks his life to save a trapped May and Claudette; Buck and Eddie must help an injured electrician; Chimney and his brother team up as firefighters for the first time.

Members of the 118 attempt to rescue a wellness retreat guru after his followers turn on him; an emergency call at an upscale hair salon; Maddie contemplates returning to work, Eddie and May make decisions about their future.

While in Florida caring for her ailing father, Athena and Bobby investigate the disappearance of her childhood friend from 45 years ago.

Bobby meets Athena's parents for the first time; Maddie attempts to end her marriage for good, causing Doug to insinuate himself even deeper into Chimney's life.

Chimney's history at Station 118 is explored as he works hard to become the paramedic and firefighter he is known to be.

The 118 races to the rescue when a birdwatcher is trapped under a tree; Chimney is in for a wild ride when he tends to a drunken driver; Maddie helps a mother and her young daughter when an abusive father shows up at their house.

Athena and the 118 race to save lives after a drunken driver causes a deadly pileup on the freeway; Maddie goes into labor; Hen and Karen are devastated as they prepare their foster daughter to be reunited with her birth mother.

Athena and the 118 race to the rescue when a fading movie star is plagued by a series of near-death experiences.

The members of the 118 rush to the site of a hit-and-run that leaves a familiar face in critical condition; with Buck's help, Athena investigates the case of a missing woman; Josh recalls an emergency in 2006 that led him to become a first responder.

Athena investigates when the same house is hit with two home invasion 911 calls within hours of each other; the 118 race to the rescue when a man is trapped in an attic; Hen asks for a second chance with her medical school professor.

The 118 responds to calls dealing with parents and their children, including a disastrous birthday party thrown by a mommy blogger; Athena and Michael talk to May about her past suicide attempt; Chimney and Maddie adjust to life with their newborn.

Hen fears for Karen's life when an explosion rocks her science lab on the day she brings Denny to work with her.

The 118 race to the rescue to a renaissance faire; an overbearing boss is poisoned; Athena fears for May's life when she encounters a disturbed young man; Uncle Buck babysits young Jee-Yun as Maddie and Chimney begin house-hunting.

Athena and Bobby set off on their honeymoon cruise, but when duty calls, their vacation is put on hold; a fighter jet traps a civilian; an unusual incident leaves a couple stuck together.

A fire breaks out in an accountant's office and a car crashes into a ``living funeral``; Athena is shocked when a suspect dies in her custody minutes after she arrests him; Buck is attracted to a death doula; Maddie and Chimney are audited by the IRS.

As the citywide blackout continues to cause mayhem in Los Angeles, Athena races to save her family from a tragedy; Eddie must make a difficult choice about his future; Maddie makes a life-changing decision.

The 118 springs into action when a citywide blackout and a record heat wave causes mayhem in Los Angeles; Chimney confides in Hen about Maddie's condition; Athena's worst nightmare comes true.

A dry thunderstorm rolls over Los Angeles, bringing in a series of lightning strike emergencies for the 118 and leaves a first responder's life hanging in the balance; Chimney get a surprise from a visiting Albert.

As Buck's life hangs in the balance, he dreams of a world where he never became a firefighter, for better and worse.

The 118 race to rescue two roommates desperately trying to find a needle in a haystack at a landfill, and help a woman whose nightmare dream suddenly becomes a painful reality; Athena and Maddie team up to find a missing boy in a crowded mall.

A wedding proposal tragically intersects with a bank robbery; a bride is literally stuck on her way to the altar; Athena talks a victim through her grief; Buck finds a surprise visitor on his doorstep.

The 118 faces emergencies at a spin class and a hair salon; a husband and wife find themselves in a compromising position; Buck discovers new cognitive abilities; Hen and Karen find out Denny has been seeing his biological father.

A series of ransomware threats leads to emergencies for the 118, including a helicopter crash at a hospital and an air traffic control tower system failure; the case of the realtor serial rapist goes to trial.

A series of freeway car accidents leads to a catastrophic overpass collapse that endangers the lives of civilians and members of the 118.

The 118 race to emergencies at a commercial bakery and a bodybuilding competition; Bobby's annual performance reviews send Chimney to the firefighter academy, where he runs into a familiar face; Eddie's aunt gets involved in his personal life.

Despite the case being closed, Bobby is determined to prove his Alcoholics Anonymous sponsor was murdered and bring his killer to justice; Buck struggles with his post-traumatic stress.

The Santa Ana winds bring in a variety of weirder-than-usual emergencies; a family dog retrieves a severed hand; a young woman sleep-drives into the station; Denny questions Hen and Karen about his biological parents.

Athena and the 118 are on high alert when a sniper is targeting members of the LAFD; Maddie makes a life decision.

The members of the 118 make calls to save a bridezilla at a disastrous wedding; Hen plays medical detective when her mother falls ill; Eddie and Christopher receive a visit from Carla; Athena uncovers a secret Bobby has been hiding.

When a famous mystery writer dies, Athena, Bobby and the 118 respond to the chaos caused by a citywide manhunt for buried treasure the author left behind.

Maddie's return to work proves to be more triggering than expected, as she may have returned too soon; Eddie struggles to adapt to his new surroundings.

The 118 responds to a call at a megachurch, where Bobby runs into his estranged mother; Buck is looking to expand his social circle now that Eddie has left.

After the 118 responds to several calls from the same person, Hen steps in to offer them advice; Eddie confronts his parents and takes a big step in his relationship with his son.

During the holidays, the first responders must deal with a stampede at a toy store, a mistletoe stunt gone awry and neighbors competing in a Christmas light showdown; Bobby contemplates his future with Athena; Chimney and Buck try to help Maddie.