Dylan was six when The End came, back in 2018; when the electricity went off for good, and the 'normal' twenty-first century world he knew disappeared. Now he's 14 and he and his mam have survived in their isolated hilltop house above the village of Nebo in north-west Wales. Despite their close relationship, each has their own secrets, thoughts and memoris when emerge as, in turn, they write in a found notebook - the Blue Book of Nebo.