A Summer on Tell Tale Island

Publisher's blurb:

So here's the deal: we're stuck on a mystical, treacherous, ever-changing, and paradoxical island in the middle of nowhere this summer. I know what you're wondering, "What?! Why?!'" well let me explain. You see our Magic Scout leader Rick, at Camp Huxley, got very fed up with our rowdy antics. So fed up, in fact, that he banished us to this island to teach us a lesson! He says if we don't shape up and earn our camp badges before summer's end, we are stuck here... at least until our parents come pick us up.