"Shell". It was more than a word, it was a promise. The first letter of each of their names, childhood friends that swore they would be together through thick and thin. But now, the links are fraying. One by one, Laura's friends are vanishing, spirited away into the night. Now, down to just her and one friend, they decide to search for their missing companions, late at night, when the grown-ups are fast asleep. "Shell". It was a promise. And promises are eternal.