Travis and Theo face danger while responding to an emergency at a haunted house; Ben continues his fight for Baby Pru; Vic opens up to Andy; Station 19 prepares to welcome patients to the Dean Miller Memorial Clinic.
The Station 19 crew offers aid to a man who sets himself on fire; Theo proves his devotion to Vic; Sullivan seeks advice from Dr. Webber; Travis comes to a realization about his love life.
Vic and Theo respond to a domestic disturbance between the parents of a transgender teenager; Jack learns shocking new details about his childhood; Ben and Travis help a clinic patient that's long overdue for medical treatment.
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.