A woman from Archer's past returns and threatens his transplant surgery. Marcel clashes with Med's new eager first-year resident.
Meredith, Richard and Alex must deal with the consequences after Bailey fires them for insurance fraud; after disappearing in the fog, Jackson helps a man in a dangerous situation; Tom gets new responsibilities at the hospital.
Seattle firefighters Ben Warren and Andy Herrera head to Grey Sloan after rescuing two boys that are injured in a house fire. Meanwhile, the doctors are hard at work on their projects for the Grey Sloan Surgical Innovation Contest; and Amelia brings Tom Koracick in to consult on her and Alex's patient.
Meredith turns heads when she shows up to work done up and ready for her blind date later that day, while Alex makes a questionable decision in order to save a patient. Meanwhile, the burden of knowing Teddy's secret keeps Maggie up at night, ultimately making her decide she has to tell someone.
The doctors operate on a man who crashed into Maggie's car; Owen, back from paternity leave, struggles with Tom's new position; Meredith's recent firing doesn't stop her from diagnosing those around her; Richard and Alex start anew and it's not easy.