A series of ransomware threats leads to an overabundance of emergencies for the 118, including a medevac helicopter crash at a hospital and an air-traffic control tower system failure. Meanwhile Athena must revisit her traumatic attack when the case of the realtor serial rapist goes to trial, Eddie suffers a health scare and Maddie's postpartum depression worsens.
s05e01 - Panic
s05e02 - Desperate Times
s05e03 - Desperate Measures
s05e04 - Home and Away
s05e05 - Peer Pressure
s05e06 - Brawl in Cell Block 9-1-1
s05e07 - Ghost Stories
s05e08 - Defend in Place
s05e09 - Past is Prologue
s05e10 - Wrapped in Red
s05e11 - Outside Looking In
s05e12 - Boston
s05e13 - Fear-O-Phobia
s05e14 - Dumb Luck
s05e15 - FOMO
s05e16 - May Day
s05e17 - Hero Complex
s05e18 - Starting Over
Fast-paced exploration into the high-pressure experiences of police, paramedics and firefighters who are thrust into the most frightening, shocking and heart-stopping situations. These emergency responders must try to balance saving those who are at their most vulnerable with solving the problems in their own lives.