When David McLean, well-loved grandfather and avid adventurer, dies, he leaves behind an unusual will that outlines seven tasks he has set for his seven grandsons. Eric Walters, John Wilson, Ted Staunton, Richard Scrimger, Norah McClintock, Sigmund Brouwer and Shane Peacock bring their signature writing styles to a series of adventures that take readers from the top of Kilimanjaro to the bottom of the Mediterranean.