Poppy is an extraordinary young girl who loves spending time with her grandparents and Lord Ted, a truly magical teddy bear. Following a school trip to the Tower of London, Poppy and Lord Ted hear that the crown jewels have been stolen and that warder, George Featherbottom, has been kidnapped. The hunt is on for Chief Inspector Pickles-Cunningham and his team to solve the crime of the century and to return the crown jewels to the Queen. Unaware of the danger before her, Poppy soon finds herself entangled in the mystery and races to save the day.