Lives hang in the balance as the members of Station 19 continue to fight a raging inferno inside a skyscraper; Pruitt's health is in grave danger at Grey Sloan; a seasoned firefighter with a mysterious past arrives.
It's a life-or-death situation when a young boy falls into water pipes beneath the city; with the clock ticking, the firefighters jump into action to save his life.
Station 19 receives a call from concerned neighbors about a resident in their apartment building; Ryan takes an unlikely member of the team on a ride-along.
Sullivan assigns each member of the crew a specialty skill to learn; Ryan is caught off guard when he comes face-to-face with someone from his past; Sullivan, Andy and Maya handle a structure fire in a derelict building.
Capt. Sullivan continues his efforts to bring together the fire and police departments by hosting a training seminar; Ben and Miranda have an honest conversation about their marriage.
Just when Ryan agrees to talk to it out with his dad, he makes an unexpected visit; Sullivan looks to an unlikely source for some bonding tips.
As the team gathers for a Friendsgiving celebration at Dean's, a violent windstorm touches down in Seattle; the crew must put the festivities on hold and report for duty, leaving some members in a life-threatening situation.
In the aftermath of the windstorm, Andy and Sullivan's fates remain unknown while trapped in an overturned car; the team confronts Jack about his well-being; the firefighters race against time to find their teammates.
Andy, Maya and Dean respond to a call and find an injured woman who has amnesia; Capt. Sullivan takes Ben and Jack on a house call that quickly becomes a close call for the patient they're treating; Ryan may not have seen the last of his father.
Jack and Maya are called to treat people in a subway train and discover a potential threat; Travis, Ben and Dean get pressured into inviting Sullivan to help repaint walls in Travis' house and come to a surprising conclusion about Sullivan.
When an RV crashes into Station 19, the team races against the clock to save lives and secure the building's compromised structure; a surprise delivery arrives at reception.
While struggling to help victims of a crash on a desolate road, Vic finds the courage to confront a difficult situation; Ben prepares to go out for Medic One; Pruitt spends time with a special someone.
A blackout in Seattle creates dangerous situations throughout the city, and the members of Station 19 head out on calls, including locating a missing girl and helping a man who is on life support.
Station 19 gets called to a structure fire at a coffee processing plant; Ripley and Vic consider a shocking option to save their relationship; Andy gets some surprising news about some of her fellow crew members; Pruitt takes on a new position.
Following a deadly blaze inside a coffee beanery, the members of Station 19 find themselves on high alert as one of their team lands at Grey Sloan, leaving the future uncertain in the face of a life-threatening situation.
The crew gathers to face the outcome of a life-threatening situation; Andy and Ben respond to a man impaled by a chandelier; Station 19 is called upon to organize shipments of supplies and assist with wildfires in Los Angeles.