The little, just-born girl Thumbelina, making her first steps, does not yet know, and cannot know what Happiness is.
With this question, she turns to everyone with whom his life leads. But the answers are far from the truth. Because everyone lives only his personal ideas about it. And only when Thumbelina rescues Swallow from death, she begins to understand the deeper meaning of the word: you only need to do good deeds and you will definitely have friends. This is happiness.