Just when Ryan agrees to talk it out with his dad, Greg Tanner makes an unexpected visit to Station 19, leaving Ryan and others confused. In an effort to connect with his crew, Captain Sullivan enlists the help of an unlikely source for some bonding tips.

Captain Sullivan continues his efforts to bring together the fire and police departments by hosting a training seminar that does not go as planned. Meanwhile, Ben and Miranda have an honest conversation about their marriage, leading Miranda to make a tough decision about their future.

Everyone is less than enthusiastic when Sullivan assigns each member of the crew a specialty skill to learn. During a house call, Ryan is caught off guard when he comes face-to-face with someone from his past; and Sullivan, Andy and Maya handle a structure fire in a derelict building.

When Station 19 receives a call from concerned neighbors regarding a resident in their apartment building, the team heads out to investigate. When they arrive to evaluate the scene, they're shocked by what they find inside. Meanwhile, in an effort to create a solid working relationship between the fire and police departments, Ryan takes an unlikely member of the team on a ride-along.

It’s a life-and-death situation when a young boy falls into water pipes beneath the city of Seattle. With the clock ticking, the firefighters of Station 19 jump into action to save his life.

Lives hang in the balance as the members of Station 19 continue to fight a raging inferno inside a skyscraper. Meanwhile, Pruitt’s health is in grave danger at Grey Sloan; and a seasoned firefighter with a mysterious past arrives at Station 19, leaving everyone to wonder what the future holds.

Ben reaches a new milestone as a rookie and, as is tradition, receives something from the crew. Chief Ripley holds final interviews for the role of captain but is interrupted when the team is called to a massive skyscraper fire, causing several lives to hang in the balance.

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.

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.

Ryan tags along to a disaster drill training at Station 19 where he and Jack get competitive. Captain Pruitt’s health weakens and Andy is sticking by his side. Meanwhile, both the firehouse crew and police department respond to a strip mall fire, forcing Jack and Ryan to work together.