In a world filled with nanopolymers, air cars and skyboards, there has been a struggle for metal for many years. Bloody wars and the greed of the rulers have sentenced thousands of civilians to death and the planet to destruction. Frey and Rafia are twin sisters, the daughters of a cruel ruler who is ready to destroy anyone just to take possession of the riches of the earth. Born a few minutes later, Frey became a real shadow: she grew up, hiding from prying eyes. While Rafia was taught to charm, Frey was taught to kill. They are just weapons in the tenacious hands of a despot, so the sisters could only trust each other all their lives. By speaking out against her father, Frey put her sister in danger without even knowing it. One decision of a tyrant can change everything. Now brave Frey must make a choice: save the people or her sister.