Dring-dring! With the distinctive sound of their bicycle bells, Chirri and Chirra are off on another whimsical adventure. The twins brave a rainy day together...after all, stormy weather is no match for their boundless energy and curiosity. The pair happens upon a cafe that is only open on rainy days, and they sip tea with a side of sweet rock candy as they watch the droplets fall. They continue their journey, only to discover that the rain is now falling upside-down, their bicycles suspended on the droplets as they ride along. For these winsome twins, the world is a haven of endless discovery, of wonderful oddities, of adventure and excitement without danger.