Once upon a time in a magical forest, a unicorn named Sparkle was playing with her friends. Suddenly, they noticed that the rainbow had disappeared from the sky. They decided to go on a journey to find the lost rainbow. Along the way, they met a friendly dragon who offered to help them. Together, they searched high and low, through the forest and over the mountains. Finally, they found the rainbow hidden behind a waterfall. With a little bit of magic, they were able to bring the rainbow back to the sky, and the forest was filled with color once again.