As soon as Alfred arrives at his granny's cottage, he feels like he's being watched. There are steep cliffs and dark forests all around, teeming with unfamiliar life - even odd little faerie creatures only Alfred can see. When free-spirited Saga bursts into his life, he begins to appreciate the beauty of these places that have always scared him.

But this special world is under threat: Alfred's dad is working on a project to dig a giant tunnel through the landscape for a motorway. As he joins Saga in the community protests against the plan, Alfred draws ever closer to the strange world of the faerie creatures, following a thread that seems to be leading him deep into secrets from his family's past.