With the absence of Captain Pruitt, Andy and Jack try to navigate how to work together, and a car accident on a rural road puts both the victims and the crew’s lives at risk.

Upon the arrival of Batallion Chief Frankel, Jack begins his first shift as co-captain and continues to butt heads with Andy on leadership styles. Captain Pruitt has a difficult time following doctor’s orders and winds up back at the station to take on administrative duties. Meanwhile, the rest of the team at Station 19 responds to an attic fire at JJ’s apartment building and a call to a pool house party.

Miranda Bailey visits Ben at work, meeting his new co-workers for the first time. While most of the team responds to a motor vehicle accident involving an electrical danger, Andy and Maya are paired up to go on their first stakeout.

Ripley interviews each member of the Station 19 crew to determine whether Andy or Jack should be given the role of captain. Meanwhile, a mom’s day out on a party bus takes a turn for the worst; and Captain Pruitt continues his treatment.

In the final days before the Station 19 captaincy is announced, Pruitt warns Andy not to be disappointed with the outcome. Meanwhile, Ben gets upset with Pruitt for having told Bailey the dangers of firefighting; and the team gets trapped inside the garage of a burning house, putting several lives at risk.

Ben and Jack mollify a group of homeless foster and biological siblings so they can help save a life, triggering memories from Jack’s past. Meanwhile, Maya pushes the team too hard and struggles to bring them together; and Pruitt threatens to take drastic action when refused a request.

In an effort to increase morale, Maya takes the crew on a team-building camping trip that doesn’t exactly go according to plan. Their bond is put to the test as they work to save first-time campers after a gruesome bear attack. Meanwhile, Pruitt takes steps to repair his relationship with Andy, and Sullivan goes to extreme lengths to find relief from the pain in his leg.

When a blizzard hits Seattle, Travis must take a difficult call and members of the crew are forced to face their truths. Meanwhile, Ben has rising suspicions about a colleague.

As Ben readies the new Physician Response Team truck for the field, his suspicions about Sullivan and the missing Fentanyl continue to grow. Meanwhile, Jack and Rigo try to look past their differences when they are forced to work together and fight a mysterious gas station fire; Dean and JJ try to work through their differing parenting styles; and Travis meets someone new.

The Station 19 crew responds to a drunk driver scene. Meanwhile, Dean receives advice from Pruitt on a difficult situation, and Sullivan seeks help from Dr. Amelia Shepherd.