Once upon a time, there was a little caterpillar named Rosi. Rosi was very curious and was always excited about new things. One day she discovered that she was going to turn into a butterfly. She couldn't wait to have wings and fly through the air. But first, she had to build her cocoon and pupate in it.

Rosi worked hard to weave her cocoon and soon it was ready. When it was ready, she went to sleep. While she slept, her body began to change. When she woke up, she felt very different from before. Her limbs were long and her body was much slimmer. She could feel her wings and knew it was time to slip out of her cocoon.

It was not easy to find her way out of the cocoon, but Rosi did not give up and with a lot of effort and some setbacks, she finally hatched out. She stretched her wings and for the first time in her life, she could fly! Rosi flew high into the sky and discovered the world from above.

She saw things she had never seen before and she met many new friends, like bees, butterflies, and birds. She flew from flower to flower and enjoyed the sun's rays on her face. Rosi realized that change can sometimes be difficult, but that it can also bring great things. She was infinitely grateful for her transformation into a butterfly and for all the adventures she was now able to experience.