The Light Princess is a nineteenth-century Scottish fairy tale by George MacDonald that tells of a princess cursed at birth to lose her gravity. Physically weightless and emotionally untouched, she drifts through life unable to feel sorrow or seriousness, except when she finds joy and calm in swimming. A devoted prince enters her life and awakens love and responsibility, introducing her to emotions she has never known. When a plot threatens the lake she loves, an act of sacrifice breaks the curse, allowing the princess to regain both physical weight and emotional depth.