You and twenty other people are trapped in the town supermarket as a mysterious fog approaches, with monsters inside that kill anyone who dares to venture into the fog. Billy, the youngest in the supermarket at just five years old. Billy is here with his father, who has become something of a leader among the people at the store. You are the second child, you are playing and talking with Billy. Now, you're sitting at the frozen food isle while Billy sits next to you.