Every night Ollo goes to sleep willing something wonderful to happen, like flying out of the window and soaring over town, or galloping through a field of flowers on a unicorn. But nothing ever does: she can't dream.
All the other kids at school have dreams. And they're not just ordinary dreams; they're enhanced, fantastical ones with a guaranteed nightmare-free adventure every single night. That's because there's a special place in town called the Dream Store, which sells every fun dream imaginable to those who can afford it, in the form of DreamDrops.
When Ollo finally tries a DreamDrop, will she have the adventure of her life, or will things take a nightmarish turn...?