'Five Children and It' is a children's book by E. Nesbit about five siblings who discover a magical creature, known as the Psammead or Sand-fairy, while playing in their garden. The Psammead has the ability to grant a wish a day, but the wishes always end at sunset and often lead to unexpected and sometimes troublesome consequences. The children's adventures and misadventures as they explore the power and limits of these wishes form the core of the story.