As the doctors continue to weather the storm without power, Max relies on an unlikely source to get the lights back on. Meanwhile, Reynolds must get creative as he continues to work to save Hugh with very few resources.
Dr Manning investigates a young boy's background after the child is admitted with a broken wrist. Dr Choi tries to deal with an erratic patient.
Jo Evans plunges her family into a deepening mystery when she discovers a young girl on the night of an inexplicable plane crash and decides to protect her.