Riding a new bicycle near her home in the small town of Deadwood, a girl named Rose falls into the ground. When she wakes up, she discovers a strange square chamber whose walls are covered with carved panels with flaming symbols. But her rescuers see an even stranger picture: the girl is sitting on a giant metal palm. For many years, the bizarre artifact has kept its secret - neither its origin, nor its creators, nor the purpose of its creation are known, and its age, calculated in millennia, seems impossible. Rose Franklin, now a Doctor of Physics and Mathematics, is gradually coming closer to the solution, but she herself does not know what she will discover in the end: the key to eternal peace or weapons of mass destruction...