When siblings CHARLIE and HANNAH receive the call that their grandfather has been hospitalized, they load up the car and drive north to visit him. Charlie insists on packing camping equipment. He wants to visit Tahquamenon Falls once they arrive their favorite place to camp as children. Halfway to their destination, Hannah's depression takes a serious hold on her. She abandons her brother and runs off. She books it into the woods and down the beach. Cold and exhausted, she happens upon three teenagers camping in the forest. She befriends them, and lies about her identity. This gives her temporary fulfillment until she learns more about her new friends and their intentions with her. Discouraged, Hannah runs off again to walk alone in the woods. When she reaches the top of a sand dune, she admires the expansive view of Lake Michigan. It's extraordinary. This begins to bring Hannah the peace of mind she seeks, and she reconvenes with her worried brother to finish their journey together.