Just when Mina and The Raptor can see their future together, an unexpected complication throws a wrench in their plans. Meanwhile, Cain faces a harsh reality when Kit gives him the opportunity to prove he is ready to return to the OR. Then, Devon presents Rose with a groundbreaking clinical trial that could help her battle with Sickle Cell Anemia.

When a tornado touches down in Atlanta with Chastain directly in its path, the entire staff goes into crisis mode. Conrad and Nic work on an injured EMT. Devon and Leela become trapped with a man who has severe head trauma.

With Nic's due date steadily approaching, she and Conrad plan a relaxing day off, but their plans are interrupted when a patient with a medical mystery sends them rushing back to Chastain. Devon stays by Rose's side as she starts her clinical trial and things take a turn for the worse. Meanwhile, Kit is under pressure to bring Chastain out of debt.