Fifteen-year-old Jennie Stockitt struggles to score well in her economics tests, but a series of dreams come to her rescue. Jennie's alter ego, Drennie, leads her on the journey from ancient barter, through old and new commercial practices, to modern-day blockchain, cryptocurrencies and 'future-proofing'. She wanders through concepts like supply and demand, inflation, opportunity cost, and trade-offs. She learns about money, value, worth, wealth and trade. And she solves crimes of fraud, forgery and theft. This book is about so much more than money, commerce, finance and economics. It describes, in amusing and accessible detail - without the use of confusing charts, tables and graphs - the life-lessons the characters learn as they stumble across the facts, fallacies, scams and shams that exist in the world as we know it today.