When a blimp engine catches fire, the 118 rescue victims both inside and outside a packed stadium. Bobby and Athena discuss honeymoon plans. Maddie and Chimney go to couples therapy.

The 118 race to the rescue when a structure collapse at a happiness convention. Athena's father suffers a stroke and crashes through his house wall. Hen stretches herself too thin with test prep and her new responsibilities at the 118.

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

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

Athena investigates when the same house is hit with two home invasion 9-1-1 calls within hours. The 118 race to the rescue when a DIY home renovation traps a man in an attic. Hen asks for a second chance with her medical school professor.

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

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

118 comes to the rescue at the Renaissance Faire. Buck is tasked with babysitting Jee-Yun while Maddie and Chimney look for a new home. Eddie and Carla prepare Christopher for his first prom.

The Santa Ana winds bring in a variety of weirder-than-usual emergencies. Bobby worries about his AA sponsor. Denny questions Hen and Karen about his biological parents.

A dry thunderstorm brings in a series of lightning strike emergencies and leaves a first responder's life hanging in the balance. Athena and May go undercover at a rehab facility to help Bobby investigate his sponsor's death.

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

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

The 118 races to a spin class; Buck discovers new cognitive abilities post lightning strike; Hen and Karen are concerned when they find out Denny has been seeing his biological father; Maddie and Chimney have a suspicious neighbor.

The 118 races to a commercial bakery and a bodybuilding competition. Chimney runs into a familiar face at the firefighter academy. Maddie helps a nervous teen suffering a panic attack.

The 118 races to a fire at an accountant's office, and a car crashing into a living funeral. Athena is shocked when a suspect dies in her custody minutes after she arrests him. Maddie and Chimney panic when they are audited by the IRS.

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

A wedding proposal intersects with a bank robbery. A princess bride is stuck on her way to the altar. Athena talks a victim through her grief. Maddie takes matters into her own hands as Buck finds a surprise visitor on his doorstep.

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