"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? ?

"I know about Silver Key, the girl said. "I'm here to help you get your next power."

Max has been waiting all summer for a clue that will tell him how to get his next superpower. When a mysterious girl turns up, things begin to move very fast

Who are the Guardians and where are they? What danger is lurking around the Silver Rock hide-out? And can Max find out before it's too late?

With his sister Bea and best friend Corky in tow, Max must find the Guardians, get his next power and with the help of a friendly whale, save the Silver Rock from a gigantic slimy villain......