S4, EP10 "Parenthood"
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.
S4, EP9 "Blindsided"
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.
S4, EP8 "Breaking Point"
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.
S4, EP7 "There Goes the Neighborhood"
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.
S4, EP6 "Jinx"
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.
S4, EP5 "Buck Begins"
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.
S4, EP4 "9-1-1, What's Your Grievance?"
Athena investigates a mysterious murder during a neighborhood block party; the 118 rush to save lives endangered by a bomb threat; Chimney has a hard time keeping secrets when Maddie and Buck's parents come to town.