At age seven, Oakdale's Mystery Team was a band of kid detectives dedicated to solving child-sized mysteries (like who put their finger in the pie, and who stole the tricycle), and the town loved them for it. Now they're eighteen years old, about to graduate from high school, yet they're still storming the playground to bust little kids, and the town of Oakdale is sick to death of it. When a little girl sees their sign advertising "Mysteries Solved, Ten Cents," she asks the gang to find out who killed her parents. The Team embarks on a mystery that takes them deep into a violent conspiracy that sees their lives threatened, their friendship strained and tests their claim that they're "real detectives."