"World's Famous Stories for Children: Thumb Princess" adapts the classic fairy tale of Thumbelina into an anime format, presenting a whimsical and heartfelt narrative. The story centers on a tiny girl, no larger than a thumb, born from a magical flower gifted to a childless woman by a kind witch. Named Thumb Princess due to her diminutive size, she embarks on a series of adventures after being whisked away from her home by a scheming toad who intends to marry her off to her son.

Throughout her journey, Thumb Princess encounters a variety of characters, both friendly and antagonistic. She befriends a helpful swallow, escapes the clutches of the toad, and navigates the challenges posed by a beetle, a mole, and other creatures who either seek to exploit her or misunderstand her plight. Her resilience and kindness shine as she remains determined to find her place in the world, despite her small stature and the many obstacles she faces.

The narrative explores themes of perseverance, self-discovery, and the search for belonging. Thumb Princess’s interactions with the natural world and its inhabitants highlight her adaptability and courage. The story culminates in her reunion with a prince of her own size, who shares her sense of wonder and longing for connection. Together, they find a harmonious resolution, emphasizing the importance of love and understanding in overcoming adversity. The anime remains faithful to the fairy tale’s core elements while infusing it with vibrant animation and a gentle, engaging tone suitable for younger audiences.