Dr. Shaun Murphy and Dr. Marcus Andrews determine that their patient has been infected with COVID-19. As they struggle to understand and get ahead of a constantly evolving virus, Shaun has a hard time balancing his fears and concerns about potentially jeopardizing Lea's health and wanting to be with the woman he loves. Meanwhile, Claire looks for a way to grieve Melendez's death through her patients. In the COVID-19 ward, Dr. Morgan Reznick softens a little while tending to Nurse Petringa, who imparts a bit of wisdom from her 40+ year nursing career. Elsewhere, Dr. Alex Park and Mia discuss their future together.