British investment banker Charles Williams is travelling on business but is also eager to see his young daughters, who live with his beautiful, estranged ex-wife. As the hurricane rages, he desperately checks the shelters where thousands have taken refuge to find them, and runs into Ellen and her mother.
Meanwhile Juliette Dubois, a dedicated ER doctor, fights to save lives when the generators at the hospital fail.
The day of chaos takes its toll as New Yorkers struggle to face a natural disaster of epic proportions. But as lives are shattered, heroes are revealed - and then the real challenge begins, when the survivors face their futures .