The world we know is only the beginning. Beneath the surface and between the moonbeams is another, more magical realm. All magic comes from this place, through doorways that only the fairies can open. And at its centre is the Fairythorn Tree - the oldest tree in any garden, wood or park, and home to the tiny fairies who live in its branches. It's May Day and four of the Fairythorn fairies, Rose, Posy, Honeysuckle and Fleur, and their pet draglings are in high spirits. When Rose spots a sad-looking 'Big' - a human girl - making a wish at the Fairythorn Tree - she decides to help the girl's wish come true and find her a friend.