They are called big swords, because they always walk around the world with a big sword on their back. They are also called silver-eyed witches, and the purpose of their existence is to help human beings eradicate demons, but they are often surrounded by human panic and indifference. Denisha and Guniya, the sacred names of the two Gemini goddesses, are also the names of two excellent sword warriors. One of them is the best leader in the history of Dajian, and the other is the weakest of them, No.47. However, their fates are linked to each other, and as they are flesh and blood, they fight together forever. In the bloody battle again and again, they are not only saving mankind, but also redeeming themselves. Waiting for the awakening, looking for the meaning of life, the sword waved away the bloody darkness and sprinkled the sunshine of life.