As long as Fünkchen can remember, she has been warned not to leave the Valley of Fireflies. The world is too hostile, the sun too bright, the water too treacherous, and the giants too dangerous. But Fünkchen is curious and fascinated by the world of humans. She dreams of a great adventure: she wants to fly to the moon! Why shouldn't that be possible? After all, humans can do it too. And the human boy who lives at the edge of the forest seems quite nice. When Fünkchen befriends the equally brave cricket boy Zirp, they venture out of the valley together. Perhaps these two little creatures can still make their big dreams come true?.