Five centuries ago, the Ancient War destroyed human civilization. In the middle of a vast desert called the Empty Lands are seven cities built once upon a time by the descendants of few survivors. To compete for power, cities annually organize the Gladiator Tournament - a fierce competition held at the mysterious Training Ground - a secret technology capable of creating illusory spaces. Maxim, the young leader of the digger team, during another expedition to the Empty Lands, accidentally finds a bunker from the times of the Ancient War. Inside him is found a girl who does not remember anything except her own name - Elena. Realizing that not at all friendly forces may be interested in his unusual find, Maxim decides to hide the girl in the city of outcasts. However, the guy does not even suspect what ancient power he brought to his World...