The mail is disappearing. The mailman is losing his job. And Scout sees the thief escape every morning.At Pinehill Post Office, birthday cards vanish. Love letters disappear. Important mail never arrives. Customers are furious. Management is investigating. And Leo - the new, kind-hearted mail carrier - is about to get fired for crimes he didn't commit.But Scout the raccoon has been watching from the rooftops. He knows the truth: a brilliant magpie has been stealing shiny envelopes to build a secret paper fortress inside the ventilation shaft - completely invisible to the humans below.The problem? Scout can't just tell them. He'll have to outsmart the magpie, navigate deadly rooftop drops and spinning fan blades, and stage a theft so obvious the humans can't ignore it - before Leo loses everything.