The Station 19 crew jumps into action as a violent tornado rips through Seattle; amidst the chaos, the team makes a shocking discovery buried under a tree; Travis' first responder instincts kick into high gear at a political event.
Travis discusses his position in the mayoral race as he is determined to kick Dixon out; Maya admits to blackmail; the team is called to a fire at a run-down apartment complex that reveals an unsettling cause.
The crew responds to the scene of a car accident where two teenagers are trapped inside of an electric car; Ben and Maya find themselves caught in the middle of a domestic dispute involving a couple that they detest.
Maya and Theo answer a call at a Halloween carnival; Station 19 hosts the neighborhood kids for trick-or-treating; a prank war breaks out in the house; Jack is haunted by a ghost from his past.
The crew works against the clock to rescue a group of employees trapped inside a battery recycling plant; Carina plans a special surprise in an attempt to reconnect with Maya; Travis gets caught in the crosshairs of dirty politics.
When a lightning storm crashes a helicopter, the team is drawn away from hosting a fire boot camp for young women, and Natasha calls on Jack to help Vic run the camp instead; things get heated between Carina and Maya.
After a terrifying lightning strike, the crew works overtime to extinguish a fire at Meredith Grey's home; Maya is rushed to the hospital for a medical emergency.
Dixon threatens Natasha in the aftermath of his poor judgment; Jack is met with disappointment on his first day back; the team responds to a fire in Theo's old neighborhood.
Theo realizes there is an uptick of fires in his old neighborhood and finds himself returning; Sullivan greets a patient with a large chest burn; Carina treats a pregnant patient who presents her with an offer.
A simulation fire training goes dangerously wrong; Maya tries to make amends, and Bailey encourages Carina to listen; Jack's sister shows up at the station with a friend, an injury and an attitude.
The team is forced to make a risky call that could cost them dearly after Tomás' barbershop catches fire; Diane drops by the station and is called back into action alongside Vic and Carina; Beckett makes a decision about his future.
A call from a social media star's livestream sends the team on an unusual rescue; Travis' mayoral campaign takes off, much to his chagrin; Ben treats a patient with a surprising diagnosis.
The crew gets in the middle of a family dispute; Bailey and Carina go under cover at a crisis pregnancy center; Travis preps with Eli for a mayoral town hall.
Emotions boil over at the station as the team chafes against Theo's leadership style; Carina enlists Ben and Maya to help her with a patient in an uncomfortable position; Natasha and Sullivan's relationship hits a roadblock.
A shoddily assembled structure poses a dangerous challenge for the team; Maya and Carina work to get their relationship back on track; Natasha must decide what -- or whom -- she wants to prioritize.
