In the world of A Little Snow Fairy Sugar, Season Fairies use special musical instruments to control the weather, creating snowfall or sunshine. Sugar, a young Snow Fairy apprentice, aspires to become a full-fledged Season Fairy like her companions Salt and Pepper. To accomplish this, they must find the mysterious "Twinkles," which are required to make their magical flowers bloom, though they have no clue what the Twinkles actually are. To assist in their search, they recruit Saga, a human girl who can see Season Fairies. Despite her initial reluctance, Saga finds her tidy life disrupted by the fairies' chaotic ways. Together, Sugar, Salt, Pepper, and Saga set out on an adventure to discover the truth about the Twinkles while refining their magical abilities.