Derek, Meredith, Arizona and Cristina receive news about the plane crash lawsuit; Richard avoids Catherine's advances; Jackson takes on one of Mark Sloane's former patients.
The doctors prepare for a superstorm headed for Seattle; as Owen becomes closer to Ethan, his desire to be a parent gets stronger; Meredith and her baby are put in danger.
As the storm rages, patients are brought to the hospital by the busload and resources dwindle; a doctor's life hangs in the balance.
After several of Bailey's patients die, she becomes the focus of a CDC investigation; Cristina teases Alex about his feelings for Jo; Owen continues to take care of Ethan while his parents remain in the hospital.
As the doctors move forward with their lawsuit, they must face the realities of their injuries; Bailey tricks Arizona into assisting with a pediatric case; Cristina seeks normalcy in her new environment.