Maddie, Devin and Brandon are more than just friends, they are "The Adventurers." As the summer winds down, the Adventurers are thinking about the beginning of the school year. On a hot, August day they plan to ride bikes by Stranger Creek. Little do they know that a fun bike ride is about to become a mystery. Maddie notices a couple of strangers below the bridge and they're hiding something. Maddie watches them leave just as Brandon and Devin arrive...