In the aftermath of a deadly plane crash, Bobby and team race to help the survivors, while Athena deals with panic and chaos at the airport. Bobby confronts his past demons; Athena is out for revenge against a group of teen bullies; and Abby delivers an important message from a 9-1-1 caller.

Athena contemplates accepting a promotion that will take her out of the field.

The 118 races to help protesters at a slaughterhouse and a wife who finds herself trapped in a “rage room” with her husband’s mistress. Athena takes action after Michael, May and Harry experience a traumatic traffic stop.

When a murder weapon from a case close to Athena in the early '90s resurfaces, flashbacks to 1989 show how Athena joined the LAPD and became the police officer she is today.

Maddie fears for herself and her co-workers when the call center is taken hostage.

The Hollywood Reservoir dam breaks. The team adjusts to life during the pandemic.

The 118 springs into action when a city-wide blackout and a record heatwave causes mayhem in Los Angeles. Meanwhile, Chimney confides in Hen about Maddie's condition, and Athena's worst nightmare comes true.

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

Responding to a fire at a prison, Bobby and the 118 find themselves trapped in a deadly riot

The 118 race to the rescue at a renaissance faire, then an office building when an overbearing boss is poisoned. Athena fears for May's life when she encounters a disturbed young man. Buck babysits Jee-Yun as Maddie and Chimney begin house-hunting. Eddie and Carla prepare Christopher for his first school dance.

The 118 race to the rescue at emergencies when 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 panic when they are audited by the IRS.