S1·E48 The Bubbles

Snorkfräulein has a secret: her brother, the inventor and airship designer Snork, has developed a liquid that could be groundbreaking in the field of airship construction. When a piece of fabric is soaked in Snork's new tincture, it becomes completely airtight and tear-resistant. When Snorkmaiden, Little My, and Moomin blow soap bubbles, they turn out to be quite large, but they burst far too quickly. Snorkmaiden then has the idea of adding Snork's fabric tincture to the soap bubble water. Moments later, huge unbreakable soap bubbles float through the air. By chance, the three discover that you can even crawl inside the very large soap bubbles to float through the air with them. But the joy of the discovery is short-lived, because once you are traveling through the air in such a soap bubble, only the wind determines where the journey will take you.