Young Gilly, aged eleven and her brother, David, six-and a half, lived just outside Backerston village and were aware of the Winter Fairies' magic there. Summer had lasted too long and the Winter Fairies' hearts had filled with ice. It was then up to Gilly and her brother to find ways of convincing people of the Fairies' existence and enlisting their help to get rid of them. But even with the help of magical beings such as Gnarf, the elf, and a villager who had certain fairy powers, the task in hand seemed almost impossible - and if they didn't find a way to defeat the Winter Fairies, it meant that Winter would go on forever...