Andy becomes painfully suspicious of the circumstances surrounding her mother’s death and goes to her aunt looking for answers. Meanwhile, the members of the crew work to evacuate a doctor from Pac-North hospital and find themselves in a life-threatening situation; and Sullivan undergoes surgery for his chronic leg pain.

When the COVID-19 pandemic hits Seattle, the Station 19 crew leans on each other for support. Andy tries to make sense of her mother’s return, while Sullivan settles into a new routine. And it’s all-hands-on-deck when a group of teenagers unintentionally starts a wild fire.