The 'dark once upon a time story' could be about a haunted castle in the middle of a dark, desolate land. Long ago, a powerful sorcerer lived there. He cast a spell that made the entire area around the castle dark and full of terrors. People who passed by would hear his evil laughter. One brave knight decided to enter the castle. Inside, he faced many challenges, but in the end, he used his courage and a magic amulet he had found to break the sorcerer's spell, bringing light back to the land.
Once upon a time, in a land cloaked in eternal darkness, there was a small village. The villagers were afraid to step out at night. One day, a young brave boy decided to explore the darkness. He carried a small lantern. As he walked deeper into the dark forest, he heard strange noises. But he didn't stop. Eventually, he found a beautiful glade filled with glowing flowers that emitted enough light to push back the dark. He brought some of these flowers back to the village, and the villagers were no longer as afraid of the dark.