Riding a new bicycle near her home in the small town of Deadwood, a girl named Rose falls through the ground. Waking up, she discovers a strange square camera, whose walls are covered with carved panels with flaming symbols. But her rescuers see an even stranger picture: a girl sitting on a giant metal palm. For many years, the bizarre artifact has kept its secret - neither its origin, creators, nor purpose of creation is known, and an age dating back thousands of years seems impossible. Rosa Franklin, now a doctor of physics and mathematics, is gradually getting closer to a clue, but she herself does not know what she will find in the end: the key to eternal peace or weapons of mass destruction.