"Now it's your turn Max. You have been chosen to take over the secret tradition of Silver Key…" Max Moon is not happy about having to spend his school holidays in boring old Holmestown. But when he finds a strange silver key, clues are uncovered and an exciting adventure begins! What is the mystery surrounding Grandpa Denny? What secrets will Max, his sister Bea and their new friend Corky discover on the farm? And can Max save Holmestown from certain destruction?!?