Nancy (Blake Lively) is sad after the death of her mother. After working hard as a medical student, nancy has found peace on a surfboard and has now discovered what she was looking for the secret beach that was a special place for her mom.Though she knows it's dangerous to surf alone, she risks it.Nancy is attacked by a great white shark. She survives only to find herself stranded two hundred meters from shore.
Now she must use all of her skill and intelligence to get back to land without being killed. Can nancy outwit the shark and survive? Find out when the shallows swim into cinemas on July 7