9-1-1 Launches Season 10 With a Volcanic Eruption in Los Angeles

Los Angeles faces a fictional volcanic catastrophe when ABC's first-responder drama 9-1-1 returns for Season 10 on Thursday, October 15, 2026. The premiere airs at 8 p.m. Eastern Time, introducing an eruption that threatens residents and emergency crews while Athena Grant navigates her transition to detective work. New episodes will stream on Hulu the following day.

The opening episode, titled "That Sinking Feeling," follows the 118 as an extraordinary disaster sends lava through city streets. According to ABC's official episode synopsis, the emergency shakes Los Angeles, while Athena relies on her instincts to investigate a new case and May Grant develops confidence in her new career.

Season 10 continues the series' combination of large-scale emergencies and personal challenges. The premiere trailer shows damaged roads, trapped motorists, collapsing infrastructure and firefighters attempting to reach civilians amid the eruption. Athena also disappears after entering an underground area, prompting an urgent search by her colleagues and family.

Maddie Han, played by Jennifer Love Hewitt, highlights the unprecedented challenge facing the emergency dispatch team.

"Unfortunately, LA has no protocol for a volcano!" Maddie says in the trailer.

The disaster follows a turbulent ninth season that ended with Athena being shot during an operation connected to a human-trafficking investigation. Buck was also stabbed, but members of his team arrived in time to save him, according to Screen Rant's October 1 report.

Angela Bassett's character remains central to the new season as Athena adjusts to detective duties after years of front-line police work. Bassett previously addressed uncertainty surrounding the character's fate in an interview with Good Morning America.

"It remains to be seen," Bassett said about whether Athena would survive. "I wish I could say. But Athena is strong."

Showrunner Tim Minear also indicated before the ninth-season finale that the series would carry a developing storyline into the next season.

"I'm going to start a story here at the end of this season that's going to carry over into next season. I'm pretty excited about it!" Minear said in an interview with Decider.

The new episodes will also explore the consequences of Bobby Nash's death. Chimney, portrayed by Kenneth Choi, continues as captain of the 118 while working to preserve Bobby's legacy. Buck, played by Oliver Stark, begins fostering Theo after the child's biological parents die in a car crash, with Eddie Diaz supporting him through the challenges of parenthood.

Other returning cast members include Aisha Hinds as Hen Wilson, Ryan Guzman as Eddie Diaz, Corinne Massiah as May Grant, Elijah M. Cooper as Harry Grant and Jennifer Love Hewitt as Maddie Han. Harry continues his firefighting career, while May pursues nursing. Experienced members of the 118 are also expected to mentor the next generation of first responders, according to Disney's season preview.

ABC will launch the second season of the spinoff 9-1-1: Nashville immediately after the flagship series on October 15. Its premiere airs at 9 p.m. Eastern Time and follows the Nashville emergency team as it responds to a museum overrun by murder hornets while Detective Rogue Kelly investigates a series of troubling crimes.

ABC renewed both 9-1-1 and 9-1-1: Nashville on March 5, 2026. Grey's Anatomy will also return that evening with its 23rd season, completing the network's Thursday-night drama lineup.

Viewers in the United States can watch the premiere live on ABC through eligible television providers or stream it the next day on Hulu. Eligible Disney+ bundle subscribers can also access selected Hulu programming through Disney+, subject to subscription and content availability restrictions.