Broken – Metro LA’s 9-1-1 system is hit with a massive system-wide power outage, and the call center must go old school in responding to emergencies. The first responders must deal with explosions in multiple homes and a difficult child birth. Meanwhile, Michael confronts Bobby about parenting his kids.
Fight or Flight – The First Responders rally together to search for a missing Maddie.
Chimney Begins – A look back at how Chimney joined Station 118 and became the firefighter and paramedic he is today.
New Beginnings – Bobby meets Athena’s parents for the first time and Maddie attempts to end her marriage for good, causing Doug to insinuate himself even deeper into Chimney’s life. Meanwhile, a tanker carrying a tiger shark crashes on the freeway and a gas leak in a plastic surgeon’s office happens mid-surgery.
Merry Ex-Mas – The holidays are naughty and nice for the first responders, who must deal with a stampede at a toy store, a mistletoe stunt gone awry and neighbors competing in a Christmas-light showdown. Meanwhile, Bobby contemplates his future with Athena, Chimney and Buck attempt to lift Maddie’s spirits and Eddie must decide if he wants to give his son what he really wants for Christmas—a visit with his mom.
Hen Begins – Hen relives her evolution into the firefighter she is today as she recalls the first times she met Chimney and Athena.
Buck, Actually – Buck jumps back into the dating scene but fears he will return to his pre-Abby scoundrel-ous ways, while questioning if Maddie and Chimney are more than just friends. Emergencies involve a woman goings to great extremes on top of a freeway overpass to get the attention of her husband; a couple involved in a car accident on their wedding day; and a first date goes down the toilet.
Haunted – Halloween finds the first responders racing to the rescue at a cemetery, a haunted hayride and a spooky Hollywood parade. Meanwhile Maddie thinks she has received a “ghost” call from a missing hiker; Hen finds herself facing with a life or death situation with the father who abandoned her; and Eddie reconnects with his estranged wife.
Dosed – The first responders race to the rescue of a crashed news copter and unwittingly become the subject of an eager reporter’s first on-air assignment. Meanwhile, Bobby tries to deal with his daughter’s death, as Athena prepares for May’s homecoming dance. Then, Maddie struggles to let go of her fear of the past. Also, the team responds to emergencies at an eating contest, a bodybuilding competition and a toddler pageant.
Awful People – Wanting to see the faces behind the 9-1-1 calls, Maddie goes on a ride-along with Athena, while dealing with a seemingly “perfect” dispatcher back at the call center. Meanwhile, Hen must figure out how to save her family from permanently falling apart, and the first responders deal with emergencies both at a military funeral and a movie theater.