Once upon a time there was a small village in the middle of the jungle, and at the edge of the world. The only way to get there was crossing a bridge. Under the bridge was a large and dangerous river. In time, that part of the world began to populate and grow. The forest was being cut down to make new houses. The people of the village were afraid that their bridge would be discovered. Therefore, they made a meeting between themselves, and in the meeting they agreed to enchant the bridge, and make them invisible as well.