Saga is an industrious 11-year-old girl who lives with her grandmother in a small Northern European town. While running errands, she stumbles across Sugar, a tiny apprentice Snow Fairy. Saga is the only human who can see Sugar and her fellow-apprentices Sun Fairy Salt and Wind Fairy Pepper. The trio moves into Saga's room and follows her wherever she goes. Her friends Norma and Anne, her self-styled rival Greta, and her teacher all wonder why Saga has started talking to what looks like thin air.